189534765 has 16 divisors (see below), whose sum is σ = 346578048. Its totient is φ = 86644416.

The previous prime is 189534707. The next prime is 189534797. The reversal of 189534765 is 567435981.

It is not a de Polignac number, because 189534765 - 2⁷ = 189534637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902442 + ... + 902651.

It is an arithmetic number, because the mean of its divisors is an integer number (21661128).

Almost surely, 2^189534765 is an apocalyptic number.

189534765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189534765 is a deficient number, since it is larger than the sum of its proper divisors (157043283).

189534765 is a wasteful number, since it uses less digits than its factorization.

189534765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805108.

The product of its digits is 907200, while the sum is 48.

The square root of 189534765 is about 13767.1625616900. The cubic root of 189534765 is about 574.4200984014.

The spelling of 189534765 in words is "one hundred eighty-nine million, five hundred thirty-four thousand, seven hundred sixty-five".