19614689431 has 2 divisors, whose sum is σ = 19614689432. Its totient is φ = 19614689430.

The previous prime is 19614689359. The next prime is 19614689461. The reversal of 19614689431 is 13498641691.

It is a strong prime.

It is an emirp because it is prime and its reverse (13498641691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19614689431 - 2¹¹ = 19614687383 is a prime.

It is a super-2 number, since 2×19614689431² (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 (19614689461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9807344715 + 9807344716.

It is an arithmetic number, because the mean of its divisors is an integer number (9807344716).

Almost surely, 2^19614689431 is an apocalyptic number.

19614689431 is a deficient number, since it is larger than the sum of its proper divisors (1).

19614689431 is an equidigital number, since it uses as much as digits as its factorization.

19614689431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 52.

The spelling of 19614689431 in words is "nineteen billion, six hundred fourteen million, six hundred eighty-nine thousand, four hundred thirty-one".