158889019 has 2 divisors, whose sum is σ = 158889020. Its totient is φ = 158889018.

The previous prime is 158889011. The next prime is 158889023. The reversal of 158889019 is 910988851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158889019 - 2³ = 158889011 is a prime.

It is a super-2 number, since 2×158889019² = 50491440717564722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158889011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79444509 + 79444510.

It is an arithmetic number, because the mean of its divisors is an integer number (79444510).

Almost surely, 2^158889019 is an apocalyptic number.

158889019 is a deficient number, since it is larger than the sum of its proper divisors (1).

158889019 is an equidigital number, since it uses as much as digits as its factorization.

158889019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 49.

The square root of 158889019 is about 12605.1187618364. The cubic root of 158889019 is about 541.6240760937.

The spelling of 158889019 in words is "one hundred fifty-eight million, eight hundred eighty-nine thousand, nineteen".