3163611645 has 12 divisors (see below), whose sum is σ = 5483593596. Its totient is φ = 1687259520.

The previous prime is 3163611631. The next prime is 3163611667. The reversal of 3163611645 is 5461163613.

3163611645 is a `hidden beast` number, since 3 + 1 + 6 + 3 + 6 + 1 + 1 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2498900121 + 664711524 = 49989^2 + 25782^2 .

It is not a de Polignac number, because 3163611645 - 2⁹ = 3163611133 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35151196 + ... + 35151285.

It is an arithmetic number, because the mean of its divisors is an integer number (456966133).

Almost surely, 2^3163611645 is an apocalyptic number.

It is an amenable number.

3163611645 is a deficient number, since it is larger than the sum of its proper divisors (2319981951).

3163611645 is a wasteful number, since it uses less digits than its factorization.

3163611645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70302492 (or 70302489 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3163611645 is about 56245.9922572266. The cubic root of 3163611645 is about 1468.0056322436.

The spelling of 3163611645 in words is "three billion, one hundred sixty-three million, six hundred eleven thousand, six hundred forty-five".