2515849945 has 32 divisors (see below), whose sum is σ = 3635654400. Its totient is φ = 1632669696.

The previous prime is 2515849939. The next prime is 2515849949. The reversal of 2515849945 is 5499485152.

It is a happy number.

It is not a de Polignac number, because 2515849945 - 2³ = 2515849937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2515849892 and 2515849901.

It is not an unprimeable number, because it can be changed into a prime (2515849949) 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, 1180641 + ... + 1182769.

It is an arithmetic number, because the mean of its divisors is an integer number (113614200).

Almost surely, 2^2515849945 is an apocalyptic number.

It is an amenable number.

2515849945 is a deficient number, since it is larger than the sum of its proper divisors (1119804455).

2515849945 is a wasteful number, since it uses less digits than its factorization.

2515849945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937.

The product of its digits is 2592000, while the sum is 52.

The square root of 2515849945 is about 50158.2490224689. The cubic root of 2515849945 is about 1360.0709927257.

The spelling of 2515849945 in words is "two billion, five hundred fifteen million, eight hundred forty-nine thousand, nine hundred forty-five".