189624704538 has 16 divisors (see below), whose sum is σ = 379365391296. Its totient is φ = 63188904480.

The previous prime is 189624704459. The next prime is 189624704567. The reversal of 189624704538 is 835407426981.

It is a happy number.

It is a super-2 number, since 2×189624704538² (a number of 23 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, 4811331 + ... + 4850582.

It is an arithmetic number, because the mean of its divisors is an integer number (23710336956).

It is a 1-persistent number, because it is pandigital, but 2⋅189624704538 = 379249409076 is not.

Almost surely, 2^189624704538 is an apocalyptic number.

189624704538 is an abundant number, since it is smaller than the sum of its proper divisors (189740686758).

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

189624704538 is a wasteful number, since it uses less digits than its factorization.

189624704538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9665189.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 189624704538 in words is "one hundred eighty-nine billion, six hundred twenty-four million, seven hundred four thousand, five hundred thirty-eight".