204158534 has 16 divisors (see below), whose sum is σ = 336372480. Its totient is φ = 92501640.

The previous prime is 204158509. The next prime is 204158543. The reversal of 204158534 is 435851402.

It is a self number, because there is not a number n which added to its sum of digits gives 204158534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115922 + ... + 117669.

It is an arithmetic number, because the mean of its divisors is an integer number (21023280).

Almost surely, 2^204158534 is an apocalyptic number.

204158534 is a deficient number, since it is larger than the sum of its proper divisors (132213946).

204158534 is a wasteful number, since it uses less digits than its factorization.

204158534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233635.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 204158534 is about 14288.4055793500. The cubic root of 204158534 is about 588.8289844343.

The spelling of 204158534 in words is "two hundred four million, one hundred fifty-eight thousand, five hundred thirty-four".