156480769 has 2 divisors, whose sum is σ = 156480770. Its totient is φ = 156480768.

The previous prime is 156480763. The next prime is 156480773. The reversal of 156480769 is 967084651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98903025 + 57577744 = 9945^2 + 7588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156480769 is a prime.

It is a super-2 number, since 2×156480769² = 48972462133662722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156480763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78240384 + 78240385.

It is an arithmetic number, because the mean of its divisors is an integer number (78240385).

Almost surely, 2^156480769 is an apocalyptic number.

It is an amenable number.

156480769 is a deficient number, since it is larger than the sum of its proper divisors (1).

156480769 is an equidigital number, since it uses as much as digits as its factorization.

156480769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 156480769 is about 12509.2273542374. The cubic root of 156480769 is about 538.8737030018.

The spelling of 156480769 in words is "one hundred fifty-six million, four hundred eighty thousand, seven hundred sixty-nine".