2779198144 has 28 divisors (see below), whose sum is σ = 5517427624. Its totient is φ = 1388980224.

The previous prime is 2779198133. The next prime is 2779198157. The reversal of 2779198144 is 4418919772.

It is a happy number.

It is a super-2 number, since 2×2779198144² = 15447884647226089472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2779198091 and 2779198100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157579 + ... + 174325.

Almost surely, 2^2779198144 is an apocalyptic number.

It is an amenable number.

2779198144 is a deficient number, since it is larger than the sum of its proper divisors (2738229480).

2779198144 is a wasteful number, since it uses less digits than its factorization.

2779198144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19352 (or 19342 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 2779198144 is about 52718.1007245140. The cubic root of 2779198144 is about 1405.9606646637.

The spelling of 2779198144 in words is "two billion, seven hundred seventy-nine million, one hundred ninety-eight thousand, one hundred forty-four".