189409552 has 20 divisors (see below), whose sum is σ = 367459740. Its totient is φ = 94581248.

The previous prime is 189409547. The next prime is 189409567. The reversal of 189409552 is 255904981.

It can be written as a sum of positive squares in 2 ways, for example, as 67174416 + 122235136 = 8196^2 + 11056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189409499 and 189409508.

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, 5628 + ... + 20260.

It is an arithmetic number, because the mean of its divisors is an integer number (18372987).

Almost surely, 2^189409552 is an apocalyptic number.

It is an amenable number.

189409552 is a deficient number, since it is larger than the sum of its proper divisors (178050188).

189409552 is a wasteful number, since it uses less digits than its factorization.

189409552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15450 (or 15444 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 189409552 is about 13762.6142865373. The cubic root of 189409552 is about 574.2935768312.

The spelling of 189409552 in words is "one hundred eighty-nine million, four hundred nine thousand, five hundred fifty-two".