156851089 has 2 divisors, whose sum is σ = 156851090. Its totient is φ = 156851088.

The previous prime is 156851047. The next prime is 156851179. The reversal of 156851089 is 980158651.

156851089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156050064 + 801025 = 12492^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 156851089 - 2²⁷ = 22633361 is a prime.

It is not a weakly prime, because it can be changed into another prime (156851689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78425544 + 78425545.

It is an arithmetic number, because the mean of its divisors is an integer number (78425545).

Almost surely, 2^156851089 is an apocalyptic number.

It is an amenable number.

156851089 is a deficient number, since it is larger than the sum of its proper divisors (1).

156851089 is an equidigital number, since it uses as much as digits as its factorization.

156851089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 43.

The square root of 156851089 is about 12524.0204806604. The cubic root of 156851089 is about 539.2984591298.

The spelling of 156851089 in words is "one hundred fifty-six million, eight hundred fifty-one thousand, eighty-nine".