16204157 has 2 divisors, whose sum is σ = 16204158. Its totient is φ = 16204156.

The previous prime is 16204147. The next prime is 16204189. The reversal of 16204157 is 75140261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 2149156 = 3749^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 16204157 - 2¹² = 16200061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16204147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8102078 + 8102079.

It is an arithmetic number, because the mean of its divisors is an integer number (8102079).

Almost surely, 2^16204157 is an apocalyptic number.

It is an amenable number.

16204157 is a deficient number, since it is larger than the sum of its proper divisors (1).

16204157 is an equidigital number, since it uses as much as digits as its factorization.

16204157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 16204157 is about 4025.4387338525. The cubic root of 16204157 is about 253.0514406383.

It can be divided in two parts, 16204 and 157, that added together give a palindrome (16361).

The spelling of 16204157 in words is "sixteen million, two hundred four thousand, one hundred fifty-seven".