1931968197623 has 8 divisors (see below), whose sum is σ = 2033678929200. Its totient is φ = 1830260285568.

The previous prime is 1931968197619. The next prime is 1931968197637. The reversal of 1931968197623 is 3267918691391.

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 1931968197623 - 2² = 1931968197619 is a prime.

It is a super-2 number, since 2×1931968197623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1931968197623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1931968197613) 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 7 ways as a sum of consecutive naturals, for example, 782063 + ... + 2115551.

It is an arithmetic number, because the mean of its divisors is an integer number (254209866150).

Almost surely, 2^{1931968197623} is an apocalyptic number.

1931968197623 is a deficient number, since it is larger than the sum of its proper divisors (101710731577).

1931968197623 is a wasteful number, since it uses less digits than its factorization.

1931968197623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409761.

The product of its digits is 26453952, while the sum is 65.

The spelling of 1931968197623 in words is "one trillion, nine hundred thirty-one billion, nine hundred sixty-eight million, one hundred ninety-seven thousand, six hundred twenty-three".