158948531 has 4 divisors (see below), whose sum is σ = 181655472. Its totient is φ = 136241592.

The previous prime is 158948497. The next prime is 158948533. The reversal of 158948531 is 135849851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135849851 = 41 ⋅3313411.

It is a cyclic number.

It is not a de Polignac number, because 158948531 - 2¹⁸ = 158686387 is a prime.

It is a super-2 number, since 2×158948531² = 50529271014115922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158948533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11353460 + ... + 11353473.

It is an arithmetic number, because the mean of its divisors is an integer number (45413868).

Almost surely, 2^158948531 is an apocalyptic number.

158948531 is a deficient number, since it is larger than the sum of its proper divisors (22706941).

158948531 is an equidigital number, since it uses as much as digits as its factorization.

158948531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22706940.

The product of its digits is 172800, while the sum is 44.

The square root of 158948531 is about 12607.4791691281. The cubic root of 158948531 is about 541.6916895528.

The spelling of 158948531 in words is "one hundred fifty-eight million, nine hundred forty-eight thousand, five hundred thirty-one".