1387115536 has 15 divisors (see below), whose sum is σ = 2687825023. Its totient is φ = 693483280.

The previous prime is 1387115531. The next prime is 1387115549. The reversal of 1387115536 is 6355117831.

The square root of 1387115536 is 37244.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387115531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 144321 + ... + 153631.

Almost surely, 2^1387115536 is an apocalyptic number.

1387115536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1387115536 is the 37244-th square number.

It is an amenable number.

1387115536 is a deficient number, since it is larger than the sum of its proper divisors (1300709487).

1387115536 is an frugal number, since it uses more digits than its factorization.

1387115536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18630 (or 9313 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The cubic root of 1387115536 is about 1115.2465248833.

The spelling of 1387115536 in words is "one billion, three hundred eighty-seven million, one hundred fifteen thousand, five hundred thirty-six".