189454560831 has 24 divisors (see below), whose sum is σ = 277755098400. Its totient is φ = 124423992000.

The previous prime is 189454560829. The next prime is 189454560913. The reversal of 189454560831 is 138065454981.

It is a happy number.

189454560831 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 545 + 60 + 8 + 31 = 666.

It is not a de Polignac number, because 189454560831 - 2¹ = 189454560829 is a prime.

It is a super-2 number, since 2×189454560831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189454560931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342780 + ... + 704561.

It is an arithmetic number, because the mean of its divisors is an integer number (11573129100).

Almost surely, 2^189454560831 is an apocalyptic number.

189454560831 is a deficient number, since it is larger than the sum of its proper divisors (88300537569).

189454560831 is a wasteful number, since it uses less digits than its factorization.

189454560831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047647 (or 1047644 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 189454560831 in words is "one hundred eighty-nine billion, four hundred fifty-four million, five hundred sixty thousand, eight hundred thirty-one".