2790690491 has 4 divisors (see below), whose sum is σ = 2824313352. Its totient is φ = 2757067632.

The previous prime is 2790690481. The next prime is 2790690509. The reversal of 2790690491 is 1940960972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2790690491 - 2²² = 2786496187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2790690481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16811306 + ... + 16811471.

It is an arithmetic number, because the mean of its divisors is an integer number (706078338).

Almost surely, 2^2790690491 is an apocalyptic number.

2790690491 is a deficient number, since it is larger than the sum of its proper divisors (33622861).

2790690491 is an equidigital number, since it uses as much as digits as its factorization.

2790690491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33622860.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 2790690491 is about 52826.9863895339. The cubic root of 2790690491 is about 1407.8959431738.

The spelling of 2790690491 in words is "two billion, seven hundred ninety million, six hundred ninety thousand, four hundred ninety-one".