189250557 has 8 divisors (see below), whose sum is σ = 252437760. Its totient is φ = 126115200.

The previous prime is 189250543. The next prime is 189250577. The reversal of 189250557 is 755052981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189250557 - 2²² = 185056253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189250517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3444 + ... + 19757.

It is an arithmetic number, because the mean of its divisors is an integer number (31554720).

Almost surely, 2^189250557 is an apocalyptic number.

It is an amenable number.

189250557 is a deficient number, since it is larger than the sum of its proper divisors (63187203).

189250557 is a wasteful number, since it uses less digits than its factorization.

189250557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25923.

The product of its (nonzero) digits is 126000, while the sum is 42.

The square root of 189250557 is about 13756.8367366921. The cubic root of 189250557 is about 574.1328398331.

The spelling of 189250557 in words is "one hundred eighty-nine million, two hundred fifty thousand, five hundred fifty-seven".