189257651 has 16 divisors (see below), whose sum is σ = 230117760. Its totient is φ = 153406080.

The previous prime is 189257623. The next prime is 189257713. The reversal of 189257651 is 156752981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189257651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189257351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23081 + ... + 30186.

It is an arithmetic number, because the mean of its divisors is an integer number (14382360).

Almost surely, 2^189257651 is an apocalyptic number.

189257651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189257651 is a deficient number, since it is larger than the sum of its proper divisors (40860109).

189257651 is a wasteful number, since it uses less digits than its factorization.

189257651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53314.

The product of its digits is 151200, while the sum is 44.

The square root of 189257651 is about 13757.0945697120. The cubic root of 189257651 is about 574.1400134755.

The spelling of 189257651 in words is "one hundred eighty-nine million, two hundred fifty-seven thousand, six hundred fifty-one".