396161137 has 2 divisors, whose sum is σ = 396161138. Its totient is φ = 396161136.

The previous prime is 396161123. The next prime is 396161197. The reversal of 396161137 is 731161693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391683681 + 4477456 = 19791^2 + 2116^2 .

It is an emirp because it is prime and its reverse (731161693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396161137 - 2¹¹ = 396159089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 396161096 and 396161105.

It is not a weakly prime, because it can be changed into another prime (396161197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198080568 + 198080569.

It is an arithmetic number, because the mean of its divisors is an integer number (198080569).

Almost surely, 2^396161137 is an apocalyptic number.

It is an amenable number.

396161137 is a deficient number, since it is larger than the sum of its proper divisors (1).

396161137 is an equidigital number, since it uses as much as digits as its factorization.

396161137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 396161137 is about 19903.7970498094. The cubic root of 396161137 is about 734.4416368010.

The spelling of 396161137 in words is "three hundred ninety-six million, one hundred sixty-one thousand, one hundred thirty-seven".