19382951111 has 2 divisors, whose sum is σ = 19382951112. Its totient is φ = 19382951110.

The previous prime is 19382951089. The next prime is 19382951143. The reversal of 19382951111 is 11115928391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19382951111 is a prime.

It is a super-2 number, since 2×19382951111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19382951171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9691475555 + 9691475556.

It is an arithmetic number, because the mean of its divisors is an integer number (9691475556).

Almost surely, 2^19382951111 is an apocalyptic number.

19382951111 is a deficient number, since it is larger than the sum of its proper divisors (1).

19382951111 is an equidigital number, since it uses as much as digits as its factorization.

19382951111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 41.

The spelling of 19382951111 in words is "nineteen billion, three hundred eighty-two million, nine hundred fifty-one thousand, one hundred eleven".