2491702393 has 8 divisors (see below), whose sum is σ = 2644547400. Its totient is φ = 2339554560.

The previous prime is 2491702363. The next prime is 2491702429. The reversal of 2491702393 is 3932071942.

It can be written as a sum of positive squares in 4 ways, for example, as 709849449 + 1781852944 = 26643^2 + 42212^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2491702393 - 2⁵ = 2491702361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491702363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166918 + ... + 181231.

It is an arithmetic number, because the mean of its divisors is an integer number (330568425).

Almost surely, 2^2491702393 is an apocalyptic number.

It is an amenable number.

2491702393 is a deficient number, since it is larger than the sum of its proper divisors (152845007).

2491702393 is a wasteful number, since it uses less digits than its factorization.

2491702393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348587.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 2491702393 is about 49916.9549652220. The cubic root of 2491702393 is about 1355.7055992894.

The spelling of 2491702393 in words is "two billion, four hundred ninety-one million, seven hundred two thousand, three hundred ninety-three".