18370897538 has 16 divisors (see below), whose sum is σ = 32508870144. Its totient is φ = 7619266080.

The previous prime is 18370897481. The next prime is 18370897541. The reversal of 18370897538 is 83579807381.

It is a super-2 number, since 2×18370897538² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 21164195 + ... + 21165062.

It is an arithmetic number, because the mean of its divisors is an integer number (2031804384).

Almost surely, 2^18370897538 is an apocalyptic number.

18370897538 is a deficient number, since it is larger than the sum of its proper divisors (14137972606).

18370897538 is a wasteful number, since it uses less digits than its factorization.

18370897538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42329297.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 18370897538 in words is "eighteen billion, three hundred seventy million, eight hundred ninety-seven thousand, five hundred thirty-eight".