2493778834 has 16 divisors (see below), whose sum is σ = 3834376056. Its totient is φ = 1215692800.

The previous prime is 2493778813. The next prime is 2493778853. The reversal of 2493778834 is 4388773942.

It can be written as a sum of positive squares in 4 ways, for example, as 1424685025 + 1069093809 = 37745^2 + 32697^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130194 + ... + 148114.

Almost surely, 2^2493778834 is an apocalyptic number.

2493778834 is a deficient number, since it is larger than the sum of its proper divisors (1340597222).

2493778834 is a wasteful number, since it uses less digits than its factorization.

2493778834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19661.

The product of its digits is 8128512, while the sum is 55.

The square root of 2493778834 is about 49937.7495888631. The cubic root of 2493778834 is about 1356.0820836688.

The spelling of 2493778834 in words is "two billion, four hundred ninety-three million, seven hundred seventy-eight thousand, eight hundred thirty-four".