774138388 has 12 divisors (see below), whose sum is σ = 1354983840. Its totient is φ = 387000152.

The previous prime is 774138377. The next prime is 774138419. The reversal of 774138388 is 883831477.

It is a congruent number.

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, 14433 + ... + 41911.

It is an arithmetic number, because the mean of its divisors is an integer number (112915320).

Almost surely, 2^774138388 is an apocalyptic number.

It is an amenable number.

774138388 is a deficient number, since it is larger than the sum of its proper divisors (580845452).

774138388 is a wasteful number, since it uses less digits than its factorization.

774138388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34526 (or 34524 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 774138388 is about 27823.3425022947. The cubic root of 774138388 is about 918.2047489403.

The spelling of 774138388 in words is "seven hundred seventy-four million, one hundred thirty-eight thousand, three hundred eighty-eight".