1381917717 has 12 divisors (see below), whose sum is σ = 2082890784. Its totient is φ = 881222760.

The previous prime is 1381917701. The next prime is 1381917737. The reversal of 1381917717 is 7177191831.

It is not a de Polignac number, because 1381917717 - 2⁴ = 1381917701 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381917737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3337759 + ... + 3338172.

It is an arithmetic number, because the mean of its divisors is an integer number (173574232).

Almost surely, 2^1381917717 is an apocalyptic number.

It is an amenable number.

1381917717 is a deficient number, since it is larger than the sum of its proper divisors (700973067).

1381917717 is a wasteful number, since it uses less digits than its factorization.

1381917717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6675960 (or 6675957 counting only the distinct ones).

The product of its digits is 74088, while the sum is 45.

The square root of 1381917717 is about 37174.1538841169. The cubic root of 1381917717 is about 1113.8517587382.

The spelling of 1381917717 in words is "one billion, three hundred eighty-one million, nine hundred seventeen thousand, seven hundred seventeen".