1387930016 has 108 divisors (see below), whose sum is σ = 3111809778. Its totient is φ = 608889600.

The previous prime is 1387929943. The next prime is 1387930079. The reversal of 1387930016 is 6100397831.

It can be written as a sum of positive squares in only one way, i.e., 1162810000 + 225120016 = 34100^2 + 15004^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3720806 + ... + 3721178.

Almost surely, 2^1387930016 is an apocalyptic number.

1387930016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387930016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555904889).

1387930016 is an abundant number, since it is smaller than the sum of its proper divisors (1723879762).

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

1387930016 is a wasteful number, since it uses less digits than its factorization.

1387930016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1387930016 is about 37254.9327740636. The cubic root of 1387930016 is about 1115.4647639168.

The spelling of 1387930016 in words is "one billion, three hundred eighty-seven million, nine hundred thirty thousand, sixteen".