372287161 has 2 divisors, whose sum is σ = 372287162. Its totient is φ = 372287160.

The previous prime is 372287137. The next prime is 372287191. The reversal of 372287161 is 161782273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345960000 + 26327161 = 18600^2 + 5131^2 .

It is a cyclic number.

It is not a de Polignac number, because 372287161 - 2⁵ = 372287129 is a prime.

It is equal to p_19934209 and since 372287161 and 19934209 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 372287161.

It is not a weakly prime, because it can be changed into another prime (372287191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186143580 + 186143581.

It is an arithmetic number, because the mean of its divisors is an integer number (186143581).

Almost surely, 2^372287161 is an apocalyptic number.

It is an amenable number.

372287161 is a deficient number, since it is larger than the sum of its proper divisors (1).

372287161 is an equidigital number, since it uses as much as digits as its factorization.

372287161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 372287161 is about 19294.7443880452. The cubic root of 372287161 is about 719.3816456625.

The spelling of 372287161 in words is "three hundred seventy-two million, two hundred eighty-seven thousand, one hundred sixty-one".