19494034951931 has 2 divisors, whose sum is σ = 19494034951932. Its totient is φ = 19494034951930.

The previous prime is 19494034951871. The next prime is 19494034951957. The reversal of 19494034951931 is 13915943049491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19494034951931 - 2²² = 19494030757627 is a prime.

It is a super-2 number, since 2×19494034951931² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19494034951231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9747017475965 + 9747017475966.

It is an arithmetic number, because the mean of its divisors is an integer number (9747017475966).

Almost surely, 2^{19494034951931} is an apocalyptic number.

19494034951931 is a deficient number, since it is larger than the sum of its proper divisors (1).

19494034951931 is an equidigital number, since it uses as much as digits as its factorization.

19494034951931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 19494034951931 in words is "nineteen trillion, four hundred ninety-four billion, thirty-four million, nine hundred fifty-one thousand, nine hundred thirty-one".