1387538137 has 8 divisors (see below), whose sum is σ = 1461016800. Its totient is φ = 1314104544.

The previous prime is 1387538129. The next prime is 1387538153. The reversal of 1387538137 is 7318357831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1387538137 - 2³ = 1387538129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387538197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65358 + ... + 83944.

It is an arithmetic number, because the mean of its divisors is an integer number (182627100).

Almost surely, 2^1387538137 is an apocalyptic number.

It is an amenable number.

1387538137 is a deficient number, since it is larger than the sum of its proper divisors (73478663).

1387538137 is a wasteful number, since it uses less digits than its factorization.

1387538137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22535.

The product of its digits is 423360, while the sum is 46.

The square root of 1387538137 is about 37249.6729784303. The cubic root of 1387538137 is about 1115.3597710237.

The spelling of 1387538137 in words is "one billion, three hundred eighty-seven million, five hundred thirty-eight thousand, one hundred thirty-seven".