1387563945 has 8 divisors (see below), whose sum is σ = 2220102336. Its totient is φ = 740034096.

The previous prime is 1387563913. The next prime is 1387564001. The reversal of 1387563945 is 5493657831.

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

It is not a de Polignac number, because 1387563945 - 2⁵ = 1387563913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46252117 + ... + 46252146.

It is an arithmetic number, because the mean of its divisors is an integer number (277512792).

Almost surely, 2^1387563945 is an apocalyptic number.

1387563945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1387563945 is a deficient number, since it is larger than the sum of its proper divisors (832538391).

1387563945 is an equidigital number, since it uses as much as digits as its factorization.

1387563945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92504271.

The product of its digits is 2721600, while the sum is 51.

The square root of 1387563945 is about 37250.0193959681. The cubic root of 1387563945 is about 1115.3666861553.

The spelling of 1387563945 in words is "one billion, three hundred eighty-seven million, five hundred sixty-three thousand, nine hundred forty-five".