158608889 has 2 divisors, whose sum is σ = 158608890. Its totient is φ = 158608888.

The previous prime is 158608831. The next prime is 158608907. The reversal of 158608889 is 988806851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134745664 + 23863225 = 11608^2 + 4885^2 .

It is an emirp because it is prime and its reverse (988806851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158608889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158608889.

It is not a weakly prime, because it can be changed into another prime (158608819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79304444 + 79304445.

It is an arithmetic number, because the mean of its divisors is an integer number (79304445).

Almost surely, 2^158608889 is an apocalyptic number.

It is an amenable number.

158608889 is a deficient number, since it is larger than the sum of its proper divisors (1).

158608889 is an equidigital number, since it uses as much as digits as its factorization.

158608889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 53.

The square root of 158608889 is about 12594.0021041764. The cubic root of 158608889 is about 541.3055845927.

Subtracting from 158608889 its sum of digits (53), we obtain a square (158608836 = 12594²).

The spelling of 158608889 in words is "one hundred fifty-eight million, six hundred eight thousand, eight hundred eighty-nine".