158838131 has 2 divisors, whose sum is σ = 158838132. Its totient is φ = 158838130.

The previous prime is 158838107. The next prime is 158838139. The reversal of 158838131 is 131838851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158838131 - 2⁶ = 158838067 is a prime.

It is a super-2 number, since 2×158838131² = 50459103719146322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158838139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79419065 + 79419066.

It is an arithmetic number, because the mean of its divisors is an integer number (79419066).

Almost surely, 2^158838131 is an apocalyptic number.

158838131 is a deficient number, since it is larger than the sum of its proper divisors (1).

158838131 is an equidigital number, since it uses as much as digits as its factorization.

158838131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 38.

The square root of 158838131 is about 12603.1000551452. The cubic root of 158838131 is about 541.5662472411.

The spelling of 158838131 in words is "one hundred fifty-eight million, eight hundred thirty-eight thousand, one hundred thirty-one".