1944425194231 has 4 divisors (see below), whose sum is σ = 2093996363032. Its totient is φ = 1794854025432.

The previous prime is 1944425194213. The next prime is 1944425194289. The reversal of 1944425194231 is 1324915244491.

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

It is not a de Polignac number, because 1944425194231 - 2¹¹ = 1944425192183 is a prime.

It is a super-2 number, since 2×1944425194231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944425194031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74785584381 + ... + 74785584406.

It is an arithmetic number, because the mean of its divisors is an integer number (523499090758).

Almost surely, 2^{1944425194231} is an apocalyptic number.

1944425194231 is a deficient number, since it is larger than the sum of its proper divisors (149571168801).

1944425194231 is a wasteful number, since it uses less digits than its factorization.

1944425194231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149571168800.

The product of its digits is 1244160, while the sum is 49.

The spelling of 1944425194231 in words is "one trillion, nine hundred forty-four billion, four hundred twenty-five million, one hundred ninety-four thousand, two hundred thirty-one".