9957044018 has 4 divisors (see below), whose sum is σ = 14935566030. Its totient is φ = 4978522008.

The previous prime is 9957043991. The next prime is 9957044023. The reversal of 9957044018 is 8104407599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8104407599 = 29 ⋅279462331.

It can be written as a sum of positive squares in only one way, i.e., 7016910289 + 2940133729 = 83767^2 + 54223^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489261003 + ... + 2489261006.

Almost surely, 2^9957044018 is an apocalyptic number.

9957044018 is a deficient number, since it is larger than the sum of its proper divisors (4978522012).

9957044018 is a wasteful number, since it uses less digits than its factorization.

9957044018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978522011.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 9957044018 is about 99784.9889412230. The cubic root of 9957044018 is about 2151.3454004258.

The spelling of 9957044018 in words is "nine billion, nine hundred fifty-seven million, forty-four thousand, eighteen".