189497458 has 8 divisors (see below), whose sum is σ = 287844480. Its totient is φ = 93549300.

The previous prime is 189497411. The next prime is 189497479. The reversal of 189497458 is 854794981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 189497399 and 189497408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599518 + ... + 599833.

It is an arithmetic number, because the mean of its divisors is an integer number (35980560).

Almost surely, 2^189497458 is an apocalyptic number.

189497458 is a deficient number, since it is larger than the sum of its proper divisors (98347022).

189497458 is a wasteful number, since it uses less digits than its factorization.

189497458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199432.

The product of its digits is 2903040, while the sum is 55.

The square root of 189497458 is about 13765.8075680288. The cubic root of 189497458 is about 574.3824073446.

The spelling of 189497458 in words is "one hundred eighty-nine million, four hundred ninety-seven thousand, four hundred fifty-eight".