158196089 has 2 divisors, whose sum is σ = 158196090. Its totient is φ = 158196088.

The previous prime is 158196079. The next prime is 158196107. The reversal of 158196089 is 980691851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101344489 + 56851600 = 10067^2 + 7540^2 .

It is a cyclic number.

It is not a de Polignac number, because 158196089 - 2¹² = 158191993 is a prime.

It is not a weakly prime, because it can be changed into another prime (158196079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79098044 + 79098045.

It is an arithmetic number, because the mean of its divisors is an integer number (79098045).

Almost surely, 2^158196089 is an apocalyptic number.

It is an amenable number.

158196089 is a deficient number, since it is larger than the sum of its proper divisors (1).

158196089 is an equidigital number, since it uses as much as digits as its factorization.

158196089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 158196089 is about 12577.6026730057. The cubic root of 158196089 is about 540.8355708359.

The spelling of 158196089 in words is "one hundred fifty-eight million, one hundred ninety-six thousand, eighty-nine".