4915640457 has 144 divisors (see below), whose sum is σ = 9727990272. Its totient is φ = 2360171520.

The previous prime is 4915640437. The next prime is 4915640497. The reversal of 4915640457 is 7540465194.

4915640457 is a `hidden beast` number, since 4 + 9 + 156 + 40 + 457 = 666.

It is not a de Polignac number, because 4915640457 - 2⁷ = 4915640329 is a prime.

It is a super-2 number, since 2×4915640457² = 48327042204990337698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4915640437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3020478 + ... + 3022104.

It is an arithmetic number, because the mean of its divisors is an integer number (67555488).

Almost surely, 2^4915640457 is an apocalyptic number.

It is an amenable number.

4915640457 is a deficient number, since it is larger than the sum of its proper divisors (4812349815).

4915640457 is a wasteful number, since it uses less digits than its factorization.

4915640457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 4915640457 is about 70111.6285433451. The cubic root of 4915640457 is about 1700.3044964371.

The spelling of 4915640457 in words is "four billion, nine hundred fifteen million, six hundred forty thousand, four hundred fifty-seven".