1378113788 has 6 divisors (see below), whose sum is σ = 2411699136. Its totient is φ = 689056892.

The previous prime is 1378113767. The next prime is 1378113797. The reversal of 1378113788 is 8873118731.

It is a super-2 number, since 2×1378113788² = 3798395225351417888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172264220 + ... + 172264227.

It is an arithmetic number, because the mean of its divisors is an integer number (401949856).

Almost surely, 2^1378113788 is an apocalyptic number.

It is an amenable number.

1378113788 is a deficient number, since it is larger than the sum of its proper divisors (1033585348).

1378113788 is a wasteful number, since it uses less digits than its factorization.

1378113788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344528451 (or 344528449 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 1378113788 is about 37122.9550009155. The cubic root of 1378113788 is about 1112.8288067020.

The spelling of 1378113788 in words is "one billion, three hundred seventy-eight million, one hundred thirteen thousand, seven hundred eighty-eight".