361405161 has 24 divisors (see below), whose sum is σ = 580326656. Its totient is φ = 215226720.

The previous prime is 361405139. The next prime is 361405181. The reversal of 361405161 is 161504163.

361405161 is a `hidden beast` number, since 3 + 6 + 140 + 516 + 1 = 666.

It is not a de Polignac number, because 361405161 - 2⁵ = 361405129 is a prime.

It is a super-2 number, since 2×361405161² = 261227380794871842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (361405181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46195 + ... + 53448.

Almost surely, 2^361405161 is an apocalyptic number.

361405161 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

361405161 is a deficient number, since it is larger than the sum of its proper divisors (218921495).

361405161 is a wasteful number, since it uses less digits than its factorization.

361405161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99693 (or 99690 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 361405161 is about 19010.6591416500. The cubic root of 361405161 is about 712.3030162747.

The spelling of 361405161 in words is "three hundred sixty-one million, four hundred five thousand, one hundred sixty-one".