3120645465 has 48 divisors (see below), whose sum is σ = 6195491328. Its totient is φ = 1423433088.

The previous prime is 3120645457. The next prime is 3120645509. The reversal of 3120645465 is 5645460213.

3120645465 is a `hidden beast` number, since 3 + 1 + 2 + 0 + 645 + 4 + 6 + 5 = 666.

It is not a de Polignac number, because 3120645465 - 2³ = 3120645457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135147 + ... + 156543.

It is an arithmetic number, because the mean of its divisors is an integer number (129072736).

Almost surely, 2^3120645465 is an apocalyptic number.

3120645465 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3120645465 is a deficient number, since it is larger than the sum of its proper divisors (3074845863).

3120645465 is a wasteful number, since it uses less digits than its factorization.

3120645465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21878 (or 21875 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 3120645465 is about 55862.7377148668. The cubic root of 3120645465 is about 1461.3294741030.

The spelling of 3120645465 in words is "three billion, one hundred twenty million, six hundred forty-five thousand, four hundred sixty-five".