158998131 has 12 divisors (see below), whose sum is σ = 230090952. Its totient is φ = 105801696.

The previous prime is 158998121. The next prime is 158998153. The reversal of 158998131 is 131899851.

It is not a de Polignac number, because 158998131 - 2¹¹ = 158996083 is a prime.

It is a super-2 number, since 2×158998131² = 50560811322986322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (158998111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11226 + ... + 21071.

It is an arithmetic number, because the mean of its divisors is an integer number (19174246).

Almost surely, 2^158998131 is an apocalyptic number.

158998131 is a deficient number, since it is larger than the sum of its proper divisors (71092821).

158998131 is a wasteful number, since it uses less digits than its factorization.

158998131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32850 (or 32847 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 158998131 is about 12609.4461020300. The cubic root of 158998131 is about 541.7480287828.

The spelling of 158998131 in words is "one hundred fifty-eight million, nine hundred ninety-eight thousand, one hundred thirty-one".