9930161640 has 96 divisors (see below), whose sum is σ = 34654258080. Its totient is φ = 2269749888.

The previous prime is 9930161599. The next prime is 9930161641. The reversal of 9930161640 is 461610399.

It is a super-2 number, since 2×9930161640² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9930161641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838522 + ... + 850281.

It is an arithmetic number, because the mean of its divisors is an integer number (360981855).

Almost surely, 2^9930161640 is an apocalyptic number.

It is an amenable number.

9930161640 is an abundant number, since it is smaller than the sum of its proper divisors (24724096440).

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

9930161640 is a wasteful number, since it uses less digits than its factorization.

9930161640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688831 (or 1688820 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 9930161640 is about 99650.1963871622. The cubic root of 9930161640 is about 2149.4075627456.

The spelling of 9930161640 in words is "nine billion, nine hundred thirty million, one hundred sixty-one thousand, six hundred forty".