2491337772 has 108 divisors (see below), whose sum is σ = 7991756136. Its totient is φ = 647095680.

The previous prime is 2491337767. The next prime is 2491337773. The reversal of 2491337772 is 2777331942.

2491337772 is a `hidden beast` number, since 249 + 1 + 337 + 7 + 72 = 666.

2491337772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (2491337773) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 44793 + ... + 83600.

It is an arithmetic number, because the mean of its divisors is an integer number (73997742).

Almost surely, 2^2491337772 is an apocalyptic number.

2491337772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2491337772 is an abundant number, since it is smaller than the sum of its proper divisors (5500418364).

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

2491337772 is a wasteful number, since it uses less digits than its factorization.

2491337772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128428 (or 128416 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 2491337772 is about 49913.3025555312. The cubic root of 2491337772 is about 1355.6394674155.

The spelling of 2491337772 in words is "two billion, four hundred ninety-one million, three hundred thirty-seven thousand, seven hundred seventy-two".