189441657 has 12 divisors (see below), whose sum is σ = 273814320. Its totient is φ = 126213048.

The previous prime is 189441653. The next prime is 189441667. The reversal of 189441657 is 756144981.

189441657 is a `hidden beast` number, since 189 + 4 + 416 + 57 = 666.

It is not a de Polignac number, because 189441657 - 2² = 189441653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189441653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10194 + ... + 21972.

It is an arithmetic number, because the mean of its divisors is an integer number (22817860).

Almost surely, 2^189441657 is an apocalyptic number.

It is an amenable number.

189441657 is a deficient number, since it is larger than the sum of its proper divisors (84372663).

189441657 is a wasteful number, since it uses less digits than its factorization.

189441657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572 (or 13569 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 189441657 is about 13763.7806216170. The cubic root of 189441657 is about 574.3260226669.

The spelling of 189441657 in words is "one hundred eighty-nine million, four hundred forty-one thousand, six hundred fifty-seven".