774138386 has 16 divisors (see below), whose sum is σ = 1369904640. Its totient is φ = 321071040.

The previous prime is 774138377. The next prime is 774138419. The reversal of 774138386 is 683831477.

It is a self number, because there is not a number n which added to its sum of digits gives 774138386.

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, 891431 + ... + 892298.

It is an arithmetic number, because the mean of its divisors is an integer number (85619040).

Almost surely, 2^774138386 is an apocalyptic number.

774138386 is a deficient number, since it is larger than the sum of its proper divisors (595766254).

774138386 is a wasteful number, since it uses less digits than its factorization.

774138386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783769.

The product of its digits is 677376, while the sum is 47.

The square root of 774138386 is about 27823.3424663537. The cubic root of 774138386 is about 918.2047481496.

The spelling of 774138386 in words is "seven hundred seventy-four million, one hundred thirty-eight thousand, three hundred eighty-six".