1663293930 has 48 divisors (see below), whose sum is σ = 4102812000. Its totient is φ = 431546688.

The previous prime is 1663293913. The next prime is 1663293941. The reversal of 1663293930 is 393923661.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 20821 + ... + 61319.

It is an arithmetic number, because the mean of its divisors is an integer number (85475250).

Almost surely, 2^1663293930 is an apocalyptic number.

1663293930 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 1663293930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051406000).

1663293930 is an abundant number, since it is smaller than the sum of its proper divisors (2439518070).

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

1663293930 is a wasteful number, since it uses less digits than its factorization.

1663293930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40583 (or 40546 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 42.

The square root of 1663293930 is about 40783.5007080069. The cubic root of 1663293930 is about 1184.8307971127.

The spelling of 1663293930 in words is "one billion, six hundred sixty-three million, two hundred ninety-three thousand, nine hundred thirty".