2718925491 has 4 divisors (see below), whose sum is σ = 3625233992. Its totient is φ = 1812616992.

The previous prime is 2718925487. The next prime is 2718925523. The reversal of 2718925491 is 1945298172.

It is a happy number.

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

It is not a de Polignac number, because 2718925491 - 2² = 2718925487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2718925491.

It is not an unprimeable number, because it can be changed into a prime (2718925411) 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, 453154246 + ... + 453154251.

It is an arithmetic number, because the mean of its divisors is an integer number (906308498).

Almost surely, 2^2718925491 is an apocalyptic number.

2718925491 is a deficient number, since it is larger than the sum of its proper divisors (906308501).

2718925491 is an equidigital number, since it uses as much as digits as its factorization.

2718925491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906308500.

The product of its digits is 362880, while the sum is 48.

The square root of 2718925491 is about 52143.3168392652. The cubic root of 2718925491 is about 1395.7225721818.

The spelling of 2718925491 in words is "two billion, seven hundred eighteen million, nine hundred twenty-five thousand, four hundred ninety-one".