156884137 has 2 divisors, whose sum is σ = 156884138. Its totient is φ = 156884136.

The previous prime is 156884129. The next prime is 156884179. The reversal of 156884137 is 731488651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136983616 + 19900521 = 11704^2 + 4461^2 .

It is an emirp because it is prime and its reverse (731488651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156884137 - 2³ = 156884129 is a prime.

It is a super-2 number, since 2×156884137² = 49225264884469538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156884093 and 156884102.

It is not a weakly prime, because it can be changed into another prime (156884537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78442068 + 78442069.

It is an arithmetic number, because the mean of its divisors is an integer number (78442069).

Almost surely, 2^156884137 is an apocalyptic number.

It is an amenable number.

156884137 is a deficient number, since it is larger than the sum of its proper divisors (1).

156884137 is an equidigital number, since it uses as much as digits as its factorization.

156884137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 156884137 is about 12525.3397957900. The cubic root of 156884137 is about 539.3363325973.

The spelling of 156884137 in words is "one hundred fifty-six million, eight hundred eighty-four thousand, one hundred thirty-seven".