1940426831207 has 4 divisors (see below), whose sum is σ = 1992870799656. Its totient is φ = 1887982862760.

The previous prime is 1940426831191. The next prime is 1940426831219. The reversal of 1940426831207 is 7021386240491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1940426831207 - 2⁴ = 1940426831191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940426831407) 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, 26221984169 + ... + 26221984242.

It is an arithmetic number, because the mean of its divisors is an integer number (498217699914).

Almost surely, 2^{1940426831207} is an apocalyptic number.

1940426831207 is a deficient number, since it is larger than the sum of its proper divisors (52443968449).

1940426831207 is an equidigital number, since it uses as much as digits as its factorization.

1940426831207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52443968448.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 1940426831207 in words is "one trillion, nine hundred forty billion, four hundred twenty-six million, eight hundred thirty-one thousand, two hundred seven".