1380938017 has 4 divisors (see below), whose sum is σ = 1382268160. Its totient is φ = 1379607876.

The previous prime is 1380937969. The next prime is 1380938023. The reversal of 1380938017 is 7108390831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380938017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380938057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663513 + ... + 665590.

It is an arithmetic number, because the mean of its divisors is an integer number (345567040).

Almost surely, 2^1380938017 is an apocalyptic number.

It is an amenable number.

1380938017 is a deficient number, since it is larger than the sum of its proper divisors (1330143).

1380938017 is a wasteful number, since it uses less digits than its factorization.

1380938017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330142.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1380938017 is about 37160.9743817355. The cubic root of 1380938017 is about 1113.5884776152.

The spelling of 1380938017 in words is "one billion, three hundred eighty million, nine hundred thirty-eight thousand, seventeen".