361564139 has 2 divisors, whose sum is σ = 361564140. Its totient is φ = 361564138.

The previous prime is 361564127. The next prime is 361564169. The reversal of 361564139 is 931465163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361564139 - 2⁴ = 361564123 is a prime.

It is a super-2 number, since 2×361564139² = 261457253221622642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (361564169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180782069 + 180782070.

It is an arithmetic number, because the mean of its divisors is an integer number (180782070).

Almost surely, 2^361564139 is an apocalyptic number.

361564139 is a deficient number, since it is larger than the sum of its proper divisors (1).

361564139 is an equidigital number, since it uses as much as digits as its factorization.

361564139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 361564139 is about 19014.8399677725. The cubic root of 361564139 is about 712.4074456159.

The spelling of 361564139 in words is "three hundred sixty-one million, five hundred sixty-four thousand, one hundred thirty-nine".