158990201 has 2 divisors, whose sum is σ = 158990202. Its totient is φ = 158990200.

The previous prime is 158990189. The next prime is 158990203. The reversal of 158990201 is 102099851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137358400 + 21631801 = 11720^2 + 4651^2 .

It is a cyclic number.

It is not a de Polignac number, because 158990201 - 2²⁶ = 91881337 is a prime.

Together with 158990203, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8920934 and since 158990201 and 8920934 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (158990203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79495100 + 79495101.

It is an arithmetic number, because the mean of its divisors is an integer number (79495101).

Almost surely, 2^158990201 is an apocalyptic number.

It is an amenable number.

158990201 is a deficient number, since it is larger than the sum of its proper divisors (1).

158990201 is an equidigital number, since it uses as much as digits as its factorization.

158990201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 158990201 is about 12609.1316513073. The cubic root of 158990201 is about 541.7390221082.

The spelling of 158990201 in words is "one hundred fifty-eight million, nine hundred ninety thousand, two hundred one".