1938920470913 has 8 divisors (see below), whose sum is σ = 1986245673216. Its totient is φ = 1891596909600.

The previous prime is 1938920470901. The next prime is 1938920470931. The reversal of 1938920470913 is 3190740298391.

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

It is a cyclic number.

It is not a de Polignac number, because 1938920470913 - 2⁸ = 1938920470657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1938920472913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178668 + ... + 2936738.

It is an arithmetic number, because the mean of its divisors is an integer number (248280709152).

Almost surely, 2^{1938920470913} is an apocalyptic number.

It is an amenable number.

1938920470913 is a deficient number, since it is larger than the sum of its proper divisors (47325202303).

1938920470913 is an equidigital number, since it uses as much as digits as its factorization.

1938920470913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820495.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 1938920470913 in words is "one trillion, nine hundred thirty-eight billion, nine hundred twenty million, four hundred seventy thousand, nine hundred thirteen".