158857947 has 12 divisors (see below), whose sum is σ = 230665344. Its totient is φ = 105349680.

The previous prime is 158857931. The next prime is 158857961. The reversal of 158857947 is 749758851.

158857947 is a `hidden beast` number, since 1 + 588 + 57 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 158857947 - 2⁴ = 158857931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158857893 and 158857902.

It is not an unprimeable number, because it can be changed into a prime (158857997) 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, 44488 + ... + 47925.

It is an arithmetic number, because the mean of its divisors is an integer number (19222112).

Almost surely, 2^158857947 is an apocalyptic number.

158857947 is a deficient number, since it is larger than the sum of its proper divisors (71807397).

158857947 is a wasteful number, since it uses less digits than its factorization.

158857947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92610 (or 92607 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 158857947 is about 12603.8861864109. The cubic root of 158857947 is about 541.5887675063.

It can be divided in two parts, 15885 and 7947, that added together give a palindrome (23832).

The spelling of 158857947 in words is "one hundred fifty-eight million, eight hundred fifty-seven thousand, nine hundred forty-seven".