2797782945 has 32 divisors (see below), whose sum is σ = 4507176960. Its totient is φ = 1481945280.

The previous prime is 2797782941. The next prime is 2797782947. The reversal of 2797782945 is 5492877972.

It is not a de Polignac number, because 2797782945 - 2² = 2797782941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2797782941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1943536 + ... + 1944974.

It is an arithmetic number, because the mean of its divisors is an integer number (140849280).

Almost surely, 2^2797782945 is an apocalyptic number.

It is an amenable number.

2797782945 is a deficient number, since it is larger than the sum of its proper divisors (1709394015).

2797782945 is a wasteful number, since it uses less digits than its factorization.

2797782945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 17781120, while the sum is 60.

The square root of 2797782945 is about 52894.0728721092. The cubic root of 2797782945 is about 1409.0876422584.

The spelling of 2797782945 in words is "two billion, seven hundred ninety-seven million, seven hundred eighty-two thousand, nine hundred forty-five".