156764149 has 2 divisors, whose sum is σ = 156764150. Its totient is φ = 156764148.

The previous prime is 156764147. The next prime is 156764161. The reversal of 156764149 is 941467651.

156764149 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., 136469124 + 20295025 = 11682^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 156764149 - 2¹ = 156764147 is a prime.

Together with 156764147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156764143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78382074 + 78382075.

It is an arithmetic number, because the mean of its divisors is an integer number (78382075).

Almost surely, 2^156764149 is an apocalyptic number.

It is an amenable number.

156764149 is a deficient number, since it is larger than the sum of its proper divisors (1).

156764149 is an equidigital number, since it uses as much as digits as its factorization.

156764149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 156764149 is about 12520.5490694298. The cubic root of 156764149 is about 539.1987992680.

The spelling of 156764149 in words is "one hundred fifty-six million, seven hundred sixty-four thousand, one hundred forty-nine".