189945632 has 12 divisors (see below), whose sum is σ = 373955526. Its totient is φ = 94972800.

The previous prime is 189945631. The next prime is 189945667. The reversal of 189945632 is 236549981.

It can be written as a sum of positive squares in only one way, i.e., 113976976 + 75968656 = 10676^2 + 8716^2 .

It is not an unprimeable number, because it can be changed into a prime (189945631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2967869 + ... + 2967932.

Almost surely, 2^189945632 is an apocalyptic number.

It is an amenable number.

189945632 is a deficient number, since it is larger than the sum of its proper divisors (184009894).

189945632 is an equidigital number, since it uses as much as digits as its factorization.

189945632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935811 (or 5935803 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 189945632 is about 13782.0764763514. The cubic root of 189945632 is about 574.8348682711.

The spelling of 189945632 in words is "one hundred eighty-nine million, nine hundred forty-five thousand, six hundred thirty-two".