204185157 has 16 divisors (see below), whose sum is σ = 297285120. Its totient is φ = 123628400.

The previous prime is 204185141. The next prime is 204185167. The reversal of 204185157 is 751581402.

204185157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 204185157 - 2⁴ = 204185141 is a prime.

It is a super-2 number, since 2×204185157² = 83383156678229298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204185167) 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, 41182 + ... + 45872.

It is an arithmetic number, because the mean of its divisors is an integer number (18580320).

Almost surely, 2^204185157 is an apocalyptic number.

It is an amenable number.

204185157 is a deficient number, since it is larger than the sum of its proper divisors (93099963).

204185157 is a wasteful number, since it uses less digits than its factorization.

204185157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 204185157 is about 14289.3371784698. The cubic root of 204185157 is about 588.8545784541.

The spelling of 204185157 in words is "two hundred four million, one hundred eighty-five thousand, one hundred fifty-seven".