1387511377 has 16 divisors (see below), whose sum is σ = 1606227840. Its totient is φ = 1173984768.

The previous prime is 1387511371. The next prime is 1387511399. The reversal of 1387511377 is 7731157831.

It is a cyclic number.

It is not a de Polignac number, because 1387511377 - 2³ = 1387511369 is a prime.

It is a super-2 number, since 2×1387511377² = 3850375642608872258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1387511371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282063 + ... + 286939.

It is an arithmetic number, because the mean of its divisors is an integer number (100389240).

Almost surely, 2^1387511377 is an apocalyptic number.

It is an amenable number.

1387511377 is a deficient number, since it is larger than the sum of its proper divisors (218716463).

1387511377 is an equidigital number, since it uses as much as digits as its factorization.

1387511377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400.

The product of its digits is 123480, while the sum is 43.

The square root of 1387511377 is about 37249.3137789141. The cubic root of 1387511377 is about 1115.3526007176.

It can be divided in two parts, 13875 and 11377, that added together give a palindrome (25252).

The spelling of 1387511377 in words is "one billion, three hundred eighty-seven million, five hundred eleven thousand, three hundred seventy-seven".