2793978831 has 16 divisors (see below), whose sum is σ = 4267337984. Its totient is φ = 1592866944.

The previous prime is 2793978829. The next prime is 2793978839. The reversal of 2793978831 is 1388793972.

It is not a de Polignac number, because 2793978831 - 2¹ = 2793978829 is a prime.

It is a super-2 number, since 2×2793978831² = 15612635416152253122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2793978839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144541 + ... + 162726.

It is an arithmetic number, because the mean of its divisors is an integer number (266708624).

Almost surely, 2^2793978831 is an apocalyptic number.

2793978831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2793978831 is a deficient number, since it is larger than the sum of its proper divisors (1473359153).

2793978831 is a wasteful number, since it uses less digits than its factorization.

2793978831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307710.

The product of its digits is 4572288, while the sum is 57.

The square root of 2793978831 is about 52858.1009023215. The cubic root of 2793978831 is about 1408.4487123831.

The spelling of 2793978831 in words is "two billion, seven hundred ninety-three million, nine hundred seventy-eight thousand, eight hundred thirty-one".