1387615152 has 160 divisors (see below), whose sum is σ = 4578706944. Its totient is φ = 351590400.

The previous prime is 1387615147. The next prime is 1387615153. The reversal of 1387615152 is 2515167831.

It is a self number, because there is not a number n which added to its sum of digits gives 1387615152.

It is not an unprimeable number, because it can be changed into a prime (1387615153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146958 + ... + 156114.

Almost surely, 2^1387615152 is an apocalyptic number.

1387615152 is a gapful number since it is divisible by the number (12) 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 1387615152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289353472).

1387615152 is an abundant number, since it is smaller than the sum of its proper divisors (3191091792).

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

1387615152 is a wasteful number, since it uses less digits than its factorization.

1387615152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227 (or 9221 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 1387615152 is about 37250.7067315507. The cubic root of 1387615152 is about 1115.3804065751.

The spelling of 1387615152 in words is "one billion, three hundred eighty-seven million, six hundred fifteen thousand, one hundred fifty-two".