158877861 has 8 divisors (see below), whose sum is σ = 212515200. Its totient is φ = 105579552.

The previous prime is 158877847. The next prime is 158877913. The reversal of 158877861 is 168778851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158877861 - 2⁹ = 158877349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158877841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83661 + ... + 85538.

It is an arithmetic number, because the mean of its divisors is an integer number (26564400).

Almost surely, 2^158877861 is an apocalyptic number.

It is an amenable number.

158877861 is a deficient number, since it is larger than the sum of its proper divisors (53637339).

158877861 is a wasteful number, since it uses less digits than its factorization.

158877861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169515.

The product of its digits is 752640, while the sum is 51.

The square root of 158877861 is about 12604.6761560938. The cubic root of 158877861 is about 541.6113972588.

The spelling of 158877861 in words is "one hundred fifty-eight million, eight hundred seventy-seven thousand, eight hundred sixty-one".