1663959150 has 432 divisors, whose sum is σ = 5775460704. Its totient is φ = 340623360.

The previous prime is 1663959149. The next prime is 1663959151. The reversal of 1663959150 is 519593661.

1663959150 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 9 + 591 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (1663959149) and next prime (1663959151).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1663959096 and 1663959105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663959151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8621454 + ... + 8621646.

It is an arithmetic number, because the mean of its divisors is an integer number (13369122).

Almost surely, 2^1663959150 is an apocalyptic number.

1663959150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663959150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887730352).

1663959150 is an abundant number, since it is smaller than the sum of its proper divisors (4111501554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663959150 is a wasteful number, since it uses less digits than its factorization.

1663959150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 1663959150 is about 40791.6553966617. The cubic root of 1663959150 is about 1184.9887303313.

The spelling of 1663959150 in words is "one billion, six hundred sixty-three million, nine hundred fifty-nine thousand, one hundred fifty".