361640043 has 24 divisors (see below), whose sum is σ = 534643200. Its totient is φ = 235451184.

The previous prime is 361640039. The next prime is 361640051. The reversal of 361640043 is 340046163.

361640043 is a `hidden beast` number, since 3 + 616 + 4 + 0 + 0 + 43 = 666.

It is not a de Polignac number, because 361640043 - 2² = 361640039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 361639989 and 361640016.

It is not an unprimeable number, because it can be changed into a prime (361640033) 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, 354388 + ... + 355406.

It is an arithmetic number, because the mean of its divisors is an integer number (22276800).

Almost surely, 2^361640043 is an apocalyptic number.

361640043 is a deficient number, since it is larger than the sum of its proper divisors (173003157).

361640043 is a wasteful number, since it uses less digits than its factorization.

361640043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 361640043 is about 19016.8357778049. The cubic root of 361640043 is about 712.4572945780.

The spelling of 361640043 in words is "three hundred sixty-one million, six hundred forty thousand, forty-three".