158732961 has 24 divisors (see below), whose sum is σ = 226109184. Its totient is φ = 99029760.

The previous prime is 158732957. The next prime is 158732969. The reversal of 158732961 is 169237851.

It is not a de Polignac number, because 158732961 - 2² = 158732957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158732969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192931 + ... + 193751.

It is an arithmetic number, because the mean of its divisors is an integer number (9421216).

Almost surely, 2^158732961 is an apocalyptic number.

It is an amenable number.

158732961 is a deficient number, since it is larger than the sum of its proper divisors (67376223).

158732961 is a wasteful number, since it uses less digits than its factorization.

158732961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1064 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 158732961 is about 12598.9269781200. The cubic root of 158732961 is about 541.4466934598.

The spelling of 158732961 in words is "one hundred fifty-eight million, seven hundred thirty-two thousand, nine hundred sixty-one".