158469131 has 2 divisors, whose sum is σ = 158469132. Its totient is φ = 158469130.

The previous prime is 158469127. The next prime is 158469151. The reversal of 158469131 is 131964851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158469131 - 2² = 158469127 is a prime.

It is a super-2 number, since 2×158469131² = 50224930959790322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158469151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79234565 + 79234566.

It is an arithmetic number, because the mean of its divisors is an integer number (79234566).

Almost surely, 2^158469131 is an apocalyptic number.

158469131 is a deficient number, since it is larger than the sum of its proper divisors (1).

158469131 is an equidigital number, since it uses as much as digits as its factorization.

158469131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 158469131 is about 12588.4522877119. The cubic root of 158469131 is about 541.1465476531.

The spelling of 158469131 in words is "one hundred fifty-eight million, four hundred sixty-nine thousand, one hundred thirty-one".