2791581380 has 48 divisors (see below), whose sum is σ = 6759123840. Its totient is φ = 948638208.

The previous prime is 2791581379. The next prime is 2791581409. The reversal of 2791581380 is 831851972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72410 + ... + 104049.

It is an arithmetic number, because the mean of its divisors is an integer number (140815080).

Almost surely, 2^2791581380 is an apocalyptic number.

2791581380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2791581380 is an abundant number, since it is smaller than the sum of its proper divisors (3967542460).

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

2791581380 is a wasteful number, since it uses less digits than its factorization.

2791581380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176588 (or 176586 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 2791581380 is about 52835.4178558285. The cubic root of 2791581380 is about 1408.0457442793.

The spelling of 2791581380 in words is "two billion, seven hundred ninety-one million, five hundred eighty-one thousand, three hundred eighty".