1387793436 has 24 divisors (see below), whose sum is σ = 3428666640. Its totient is φ = 435386112.

The previous prime is 1387793417. The next prime is 1387793443. The reversal of 1387793436 is 6343977831.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 3401251 + ... + 3401658.

It is an arithmetic number, because the mean of its divisors is an integer number (142861110).

Almost surely, 2^1387793436 is an apocalyptic number.

It is an amenable number.

1387793436 is an abundant number, since it is smaller than the sum of its proper divisors (2040873204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387793436 is a wasteful number, since it uses less digits than its factorization.

1387793436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802933 (or 6802931 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 51.

The square root of 1387793436 is about 37253.0996831136. The cubic root of 1387793436 is about 1115.4281734131.

The spelling of 1387793436 in words is "one billion, three hundred eighty-seven million, seven hundred ninety-three thousand, four hundred thirty-six".