2631565380 has 48 divisors (see below), whose sum is σ = 7444362240. Its totient is φ = 694514688.

The previous prime is 2631565367. The next prime is 2631565397. The reversal of 2631565380 is 835651362.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220260 + ... + 231899.

It is an arithmetic number, because the mean of its divisors is an integer number (155090880).

Almost surely, 2^2631565380 is an apocalyptic number.

2631565380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631565380 is an abundant number, since it is smaller than the sum of its proper divisors (4812796860).

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

2631565380 is a wasteful number, since it uses less digits than its factorization.

2631565380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452268 (or 452266 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2631565380 is about 51298.7853657375. The cubic root of 2631565380 is about 1380.6111869490.

The spelling of 2631565380 in words is "two billion, six hundred thirty-one million, five hundred sixty-five thousand, three hundred eighty".