189757494 has 24 divisors (see below), whose sum is σ = 411397272. Its totient is φ = 63213120.

The previous prime is 189757493. The next prime is 189757499. The reversal of 189757494 is 494757981.

189757494 is a `hidden beast` number, since 1 + 89 + 75 + 7 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 189757494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189757493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48574 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (17141553).

Almost surely, 2^189757494 is an apocalyptic number.

189757494 is an abundant number, since it is smaller than the sum of its proper divisors (221639778).

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

189757494 is a wasteful number, since it uses less digits than its factorization.

189757494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572 (or 6569 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 189757494 is about 13775.2493262373. The cubic root of 189757494 is about 574.6450174397.

The spelling of 189757494 in words is "one hundred eighty-nine million, seven hundred fifty-seven thousand, four hundred ninety-four".