1393145918 has 8 divisors (see below), whose sum is σ = 2089890720. Its totient is φ = 696515680.

The previous prime is 1393145899. The next prime is 1393145939. The reversal of 1393145918 is 8195413931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15158 + ... + 54918.

It is an arithmetic number, because the mean of its divisors is an integer number (261236340).

Almost surely, 2^1393145918 is an apocalyptic number.

1393145918 is a deficient number, since it is larger than the sum of its proper divisors (696744802).

1393145918 is a wasteful number, since it uses less digits than its factorization.

1393145918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57282.

The product of its digits is 116640, while the sum is 44.

The square root of 1393145918 is about 37324.8699662839. The cubic root of 1393145918 is about 1116.8603390324.

The spelling of 1393145918 in words is "one billion, three hundred ninety-three million, one hundred forty-five thousand, nine hundred eighteen".