156110989 has 2 divisors, whose sum is σ = 156110990. Its totient is φ = 156110988.

The previous prime is 156110971. The next prime is 156111001. The reversal of 156110989 is 989011651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156000100 + 110889 = 12490^2 + 333^2 .

It is an emirp because it is prime and its reverse (989011651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156110989 - 2⁷ = 156110861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156119989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78055494 + 78055495.

It is an arithmetic number, because the mean of its divisors is an integer number (78055495).

Almost surely, 2^156110989 is an apocalyptic number.

It is an amenable number.

156110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

156110989 is an equidigital number, since it uses as much as digits as its factorization.

156110989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 156110989 is about 12494.4383227098. The cubic root of 156110989 is about 538.4488970517.

The spelling of 156110989 in words is "one hundred fifty-six million, one hundred ten thousand, nine hundred eighty-nine".