1387635468 has 24 divisors (see below), whose sum is σ = 3243081072. Its totient is φ = 461793024.

The previous prime is 1387635451. The next prime is 1387635479. The reversal of 1387635468 is 8645367831.

It is a self number, because there is not a number n which added to its sum of digits gives 1387635468.

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, 86305 + ... + 101112.

It is an arithmetic number, because the mean of its divisors is an integer number (135128378).

Almost surely, 2^1387635468 is an apocalyptic number.

It is an amenable number.

1387635468 is an abundant number, since it is smaller than the sum of its proper divisors (1855445604).

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

1387635468 is a wasteful number, since it uses less digits than its factorization.

1387635468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188041 (or 188039 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 1387635468 is about 37250.9794233655. The cubic root of 1387635468 is about 1115.3858499570.

The spelling of 1387635468 in words is "one billion, three hundred eighty-seven million, six hundred thirty-five thousand, four hundred sixty-eight".