189025779488 has 48 divisors (see below), whose sum is σ = 458024011200. Its totient is φ = 74779428096.

The previous prime is 189025779479. The next prime is 189025779491. The reversal of 189025779488 is 884977520981.

It is a super-2 number, since 2×189025779488² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32453438 + ... + 32459261.

It is an arithmetic number, because the mean of its divisors is an integer number (9542166900).

Almost surely, 2^189025779488 is an apocalyptic number.

It is an amenable number.

189025779488 is an abundant number, since it is smaller than the sum of its proper divisors (268998231712).

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

189025779488 is a wasteful number, since it uses less digits than its factorization.

189025779488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64912729 (or 64912721 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 68.

The spelling of 189025779488 in words is "one hundred eighty-nine billion, twenty-five million, seven hundred seventy-nine thousand, four hundred eighty-eight".