4640356161 has 32 divisors (see below), whose sum is σ = 7864043520. Its totient is φ = 2649149712.

The previous prime is 4640356129. The next prime is 4640356183. The reversal of 4640356161 is 1616530464.

It is a happy number.

4640356161 is a `hidden beast` number, since 4 + 6 + 4 + 0 + 35 + 616 + 1 = 666.

It is not a de Polignac number, because 4640356161 - 2⁵ = 4640356129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4640356121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201316 + ... + 223178.

It is an arithmetic number, because the mean of its divisors is an integer number (245751360).

Almost surely, 2^4640356161 is an apocalyptic number.

It is an amenable number.

4640356161 is a deficient number, since it is larger than the sum of its proper divisors (3223687359).

4640356161 is a wasteful number, since it uses less digits than its factorization.

4640356161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23002 (or 22996 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 4640356161 is about 68120.1597252972. The cubic root of 4640356161 is about 1667.9528576035.

The spelling of 4640356161 in words is "four billion, six hundred forty million, three hundred fifty-six thousand, one hundred sixty-one".