158868013 has 2 divisors, whose sum is σ = 158868014. Its totient is φ = 158868012.

The previous prime is 158867953. The next prime is 158868029. The reversal of 158868013 is 310868851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127306089 + 31561924 = 11283^2 + 5618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158868013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158868313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79434006 + 79434007.

It is an arithmetic number, because the mean of its divisors is an integer number (79434007).

Almost surely, 2^158868013 is an apocalyptic number.

It is an amenable number.

158868013 is a deficient number, since it is larger than the sum of its proper divisors (1).

158868013 is an equidigital number, since it uses as much as digits as its factorization.

158868013 is an evil number, because the sum of its binary digits is even.

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

The square root of 158868013 is about 12604.2855013682. The cubic root of 158868013 is about 541.6002064837.

The spelling of 158868013 in words is "one hundred fifty-eight million, eight hundred sixty-eight thousand, thirteen".