2491723984 has 20 divisors (see below), whose sum is σ = 4895713440. Its totient is φ = 1228314080.

The previous prime is 2491723981. The next prime is 2491723987. The reversal of 2491723984 is 4893271942.

It is an interprime number because it is at equal distance from previous prime (2491723981) and next prime (2491723987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491723981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095574 + ... + 1097845.

It is an arithmetic number, because the mean of its divisors is an integer number (244785672).

Almost surely, 2^2491723984 is an apocalyptic number.

It is an amenable number.

2491723984 is a deficient number, since it is larger than the sum of its proper divisors (2403989456).

2491723984 is a wasteful number, since it uses less digits than its factorization.

2491723984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193498 (or 2193492 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 2491723984 is about 49917.1712339552. The cubic root of 2491723984 is about 1355.7095150800.

The spelling of 2491723984 in words is "two billion, four hundred ninety-one million, seven hundred twenty-three thousand, nine hundred eighty-four".