19391129202931 has 2 divisors, whose sum is σ = 19391129202932. Its totient is φ = 19391129202930.

The previous prime is 19391129202869. The next prime is 19391129202941. The reversal of 19391129202931 is 13920292119391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19391129202931 - 2¹⁷ = 19391129071859 is a prime.

It is a super-2 number, since 2×19391129202931² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19391129202941) 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 as a sum of consecutive naturals, namely, 9695564601465 + 9695564601466.

It is an arithmetic number, because the mean of its divisors is an integer number (9695564601466).

Almost surely, 2^{19391129202931} is an apocalyptic number.

19391129202931 is a deficient number, since it is larger than the sum of its proper divisors (1).

19391129202931 is an equidigital number, since it uses as much as digits as its factorization.

19391129202931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 52.

The spelling of 19391129202931 in words is "nineteen trillion, three hundred ninety-one billion, one hundred twenty-nine million, two hundred two thousand, nine hundred thirty-one".