1664035950 has 96 divisors (see below), whose sum is σ = 4287627360. Its totient is φ = 426585600.

The previous prime is 1664035943. The next prime is 1664035957. The reversal of 1664035950 is 595304661.

It is an interprime number because it is at equal distance from previous prime (1664035943) and next prime (1664035957).

It is a junction number, because it is equal to n+sod(n) for n = 1664035899 and 1664035908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664035957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1204260 + ... + 1205640.

It is an arithmetic number, because the mean of its divisors is an integer number (44662785).

Almost surely, 2^1664035950 is an apocalyptic number.

1664035950 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 1664035950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2143813680).

1664035950 is an abundant number, since it is smaller than the sum of its proper divisors (2623591410).

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

1664035950 is a wasteful number, since it uses less digits than its factorization.

1664035950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1664035950 is about 40792.5967548034. The cubic root of 1664035950 is about 1185.0069610943.

The spelling of 1664035950 in words is "one billion, six hundred sixty-four million, thirty-five thousand, nine hundred fifty".