2797979681 has 8 divisors (see below), whose sum is σ = 3198625920. Its totient is φ = 2397567168.

The previous prime is 2797979677. The next prime is 2797979699. The reversal of 2797979681 is 1869797972.

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 2797979681 - 2² = 2797979677 is a prime.

It is a super-2 number, since 2×2797979681² = 15657380590577723522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2797979641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31976 + ... + 81353.

It is an arithmetic number, because the mean of its divisors is an integer number (399828240).

Almost surely, 2^2797979681 is an apocalyptic number.

It is an amenable number.

2797979681 is a deficient number, since it is larger than the sum of its proper divisors (400646239).

2797979681 is a wasteful number, since it uses less digits than its factorization.

2797979681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116863.

The product of its digits is 24004512, while the sum is 65.

The square root of 2797979681 is about 52895.9325562940. The cubic root of 2797979681 is about 1409.1206698108.

The spelling of 2797979681 in words is "two billion, seven hundred ninety-seven million, nine hundred seventy-nine thousand, six hundred eighty-one".