189432374 has 4 divisors (see below), whose sum is σ = 284148564. Its totient is φ = 94716186.

The previous prime is 189432371. The next prime is 189432391. The reversal of 189432374 is 473234981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473234981 = 523 ⋅904847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189432371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47358092 + ... + 47358095.

It is an arithmetic number, because the mean of its divisors is an integer number (71037141).

Almost surely, 2^189432374 is an apocalyptic number.

189432374 is a deficient number, since it is larger than the sum of its proper divisors (94716190).

189432374 is an equidigital number, since it uses as much as digits as its factorization.

189432374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94716189.

The product of its digits is 145152, while the sum is 41.

The square root of 189432374 is about 13763.4433918260. The cubic root of 189432374 is about 574.3166414927.

The spelling of 189432374 in words is "one hundred eighty-nine million, four hundred thirty-two thousand, three hundred seventy-four".