1940320113 has 4 divisors (see below), whose sum is σ = 2587093488. Its totient is φ = 1293546740.

The previous prime is 1940320111. The next prime is 1940320153. The reversal of 1940320113 is 3110230491.

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 not a de Polignac number, because 1940320113 - 2¹ = 1940320111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1940320111) 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, 323386683 + ... + 323386688.

It is an arithmetic number, because the mean of its divisors is an integer number (646773372).

Almost surely, 2^1940320113 is an apocalyptic number.

It is an amenable number.

1940320113 is a deficient number, since it is larger than the sum of its proper divisors (646773375).

1940320113 is an equidigital number, since it uses as much as digits as its factorization.

1940320113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646773374.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1940320113 is about 44049.0648368385. The cubic root of 1940320113 is about 1247.2622991460.

The spelling of 1940320113 in words is "one billion, nine hundred forty million, three hundred twenty thousand, one hundred thirteen".