1393112923 has 4 divisors (see below), whose sum is σ = 1475060760. Its totient is φ = 1311165088.

The previous prime is 1393112909. The next prime is 1393112969. The reversal of 1393112923 is 3292113931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3292113931 = 28537 ⋅115363.

It is a cyclic number.

It is not a de Polignac number, because 1393112923 - 2⁵ = 1393112891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1393112023) 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, 40973893 + ... + 40973926.

It is an arithmetic number, because the mean of its divisors is an integer number (368765190).

Almost surely, 2^1393112923 is an apocalyptic number.

1393112923 is a deficient number, since it is larger than the sum of its proper divisors (81947837).

1393112923 is an equidigital number, since it uses as much as digits as its factorization.

1393112923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81947836.

The product of its digits is 8748, while the sum is 34.

The square root of 1393112923 is about 37324.4279661457. The cubic root of 1393112923 is about 1116.8515217943.

The spelling of 1393112923 in words is "one billion, three hundred ninety-three million, one hundred twelve thousand, nine hundred twenty-three".