189023517 has 16 divisors (see below), whose sum is σ = 280942080. Its totient is φ = 125607456.

The previous prime is 189023467. The next prime is 189023521. The reversal of 189023517 is 715320981.

It is not a de Polignac number, because 189023517 - 2²² = 184829213 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189023557) 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, 2733 + ... + 19634.

It is an arithmetic number, because the mean of its divisors is an integer number (17558880).

Almost surely, 2^189023517 is an apocalyptic number.

It is an amenable number.

189023517 is a deficient number, since it is larger than the sum of its proper divisors (91918563).

189023517 is a wasteful number, since it uses less digits than its factorization.

189023517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22689 (or 22683 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 189023517 is about 13748.5823632839. The cubic root of 189023517 is about 573.9031561740.

The spelling of 189023517 in words is "one hundred eighty-nine million, twenty-three thousand, five hundred seventeen".