158860831 has 2 divisors, whose sum is σ = 158860832. Its totient is φ = 158860830.

The previous prime is 158860787. The next prime is 158860837. The reversal of 158860831 is 138068851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158860831 - 2⁹ = 158860319 is a prime.

It is a super-2 number, since 2×158860831² = 50473527252021122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158860837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79430415 + 79430416.

It is an arithmetic number, because the mean of its divisors is an integer number (79430416).

Almost surely, 2^158860831 is an apocalyptic number.

158860831 is a deficient number, since it is larger than the sum of its proper divisors (1).

158860831 is an equidigital number, since it uses as much as digits as its factorization.

158860831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 158860831 is about 12604.0005950492. Note that the first 3 decimals coincide. The cubic root of 158860831 is about 541.5920449261.

The spelling of 158860831 in words is "one hundred fifty-eight million, eight hundred sixty thousand, eight hundred thirty-one".