1387317140 has 24 divisors (see below), whose sum is σ = 3178217952. Its totient is φ = 504478880.

The previous prime is 1387317133. The next prime is 1387317179. The reversal of 1387317140 is 417137831.

It is a self number, because there is not a number n which added to its sum of digits gives 1387317140.

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, 3152774 + ... + 3153213.

It is an arithmetic number, because the mean of its divisors is an integer number (132425748).

Almost surely, 2^1387317140 is an apocalyptic number.

1387317140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387317140 is an abundant number, since it is smaller than the sum of its proper divisors (1790900812).

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

1387317140 is a wasteful number, since it uses less digits than its factorization.

1387317140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306007 (or 6306005 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1387317140 is about 37246.7064315759. The cubic root of 1387317140 is about 1115.3005524109.

It can be divided in two parts, 13873 and 17140, that added together give a palindrome (31013).

The spelling of 1387317140 in words is "one billion, three hundred eighty-seven million, three hundred seventeen thousand, one hundred forty".