2531464785 has 16 divisors (see below), whose sum is σ = 4500382080. Its totient is φ = 1350114480.

The previous prime is 2531464783. The next prime is 2531464799. The reversal of 2531464785 is 5874641352.

2531464785 is a `hidden beast` number, since 2 + 531 + 46 + 4 + 78 + 5 = 666.

It is not a de Polignac number, because 2531464785 - 2¹ = 2531464783 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2531464785.

It is not an unprimeable number, because it can be changed into a prime (2531464783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9375661 + ... + 9375930.

It is an arithmetic number, because the mean of its divisors is an integer number (281273880).

Almost surely, 2^2531464785 is an apocalyptic number.

It is an amenable number.

2531464785 is a deficient number, since it is larger than the sum of its proper divisors (1968917295).

2531464785 is a wasteful number, since it uses less digits than its factorization.

2531464785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18751605 (or 18751599 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 2531464785 is about 50313.6639989576. The cubic root of 2531464785 is about 1362.8789907187.

The spelling of 2531464785 in words is "two billion, five hundred thirty-one million, four hundred sixty-four thousand, seven hundred eighty-five".