2318722497 has 128 divisors (see below), whose sum is σ = 4584222720. Its totient is φ = 1123476480.

The previous prime is 2318722457. The next prime is 2318722501. The reversal of 2318722497 is 7942278132.

It is not a de Polignac number, because 2318722497 - 2⁷ = 2318722369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2318722457) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1795422 + ... + 1796712.

It is an arithmetic number, because the mean of its divisors is an integer number (35814240).

Almost surely, 2^2318722497 is an apocalyptic number.

2318722497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2318722497 is a deficient number, since it is larger than the sum of its proper divisors (2265500223).

2318722497 is a wasteful number, since it uses less digits than its factorization.

2318722497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1374 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 2318722497 is about 48153.1151328759. The cubic root of 2318722497 is about 1323.5781585633.

The spelling of 2318722497 in words is "two billion, three hundred eighteen million, seven hundred twenty-two thousand, four hundred ninety-seven".