2645715940 has 24 divisors (see below), whose sum is σ = 6349718592. Its totient is φ = 907102560.

The previous prime is 2645715929. The next prime is 2645715959. The reversal of 2645715940 is 495175462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9448846 + ... + 9449125.

It is an arithmetic number, because the mean of its divisors is an integer number (264571608).

Almost surely, 2^2645715940 is an apocalyptic number.

2645715940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2645715940 is an abundant number, since it is smaller than the sum of its proper divisors (3704002652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645715940 is a wasteful number, since it uses less digits than its factorization.

2645715940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18897987 (or 18897985 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 2645715940 is about 51436.5234050669. The cubic root of 2645715940 is about 1383.0813907392.

The spelling of 2645715940 in words is "two billion, six hundred forty-five million, seven hundred fifteen thousand, nine hundred forty".