189132975 has 72 divisors (see below), whose sum is σ = 355310592. Its totient is φ = 99727200.

The previous prime is 189132971. The next prime is 189132989. The reversal of 189132975 is 579231981.

It is not a de Polignac number, because 189132975 - 2² = 189132971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189132975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189132971) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 990130 + ... + 990320.

Almost surely, 2^189132975 is an apocalyptic number.

189132975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189132975 is a deficient number, since it is larger than the sum of its proper divisors (166177617).

189132975 is a wasteful number, since it uses less digits than its factorization.

189132975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 362 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 189132975 is about 13752.5624884965. The cubic root of 189132975 is about 574.0139116524.

The spelling of 189132975 in words is "one hundred eighty-nine million, one hundred thirty-two thousand, nine hundred seventy-five".