156154891 has 2 divisors, whose sum is σ = 156154892. Its totient is φ = 156154890.

The previous prime is 156154883. The next prime is 156154897. The reversal of 156154891 is 198451651.

156154891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (198451651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156154891 - 2³ = 156154883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156154897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78077445 + 78077446.

It is an arithmetic number, because the mean of its divisors is an integer number (78077446).

Almost surely, 2^156154891 is an apocalyptic number.

156154891 is a deficient number, since it is larger than the sum of its proper divisors (1).

156154891 is an equidigital number, since it uses as much as digits as its factorization.

156154891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The square root of 156154891 is about 12496.1950608975. The cubic root of 156154891 is about 538.4993670582.

The spelling of 156154891 in words is "one hundred fifty-six million, one hundred fifty-four thousand, eight hundred ninety-one".