2291371488 has 72 divisors (see below), whose sum is σ = 7446963888. Its totient is φ = 654676992.

The previous prime is 2291371441. The next prime is 2291371499. The reversal of 2291371488 is 8841731922.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 566281 + ... + 570312.

It is an arithmetic number, because the mean of its divisors is an integer number (103430054).

Almost surely, 2^2291371488 is an apocalyptic number.

2291371488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2291371488 is an abundant number, since it is smaller than the sum of its proper divisors (5155592400).

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

2291371488 is a wasteful number, since it uses less digits than its factorization.

2291371488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136616 (or 1136605 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2291371488 is about 47868.2722479097. The cubic root of 2291371488 is about 1318.3533737772.

The spelling of 2291371488 in words is "two billion, two hundred ninety-one million, three hundred seventy-one thousand, four hundred eighty-eight".