2749557894 has 12 divisors (see below), whose sum is σ = 5499372684. Its totient is φ = 916476484.

The previous prime is 2749557871. The next prime is 2749557919. The reversal of 2749557894 is 4987559472.

2749557894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2749557894² = 15120137224915430472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117739 + ... + 139145.

It is an arithmetic number, because the mean of its divisors is an integer number (458281057).

Almost surely, 2^2749557894 is an apocalyptic number.

2749557894 is an abundant number, since it is smaller than the sum of its proper divisors (2749814790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2749557894 is an frugal number, since it uses more digits than its factorization.

2749557894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42819 (or 21412 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The square root of 2749557894 is about 52436.2269237595. The cubic root of 2749557894 is about 1400.9445826130.

The spelling of 2749557894 in words is "two billion, seven hundred forty-nine million, five hundred fifty-seven thousand, eight hundred ninety-four".