19612220519 has 2 divisors, whose sum is σ = 19612220520. Its totient is φ = 19612220518.

The previous prime is 19612220483. The next prime is 19612220549. The reversal of 19612220519 is 91502221691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19612220519 is a prime.

It is a super-2 number, since 2×19612220519² (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 (19612220549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9806110259 + 9806110260.

It is an arithmetic number, because the mean of its divisors is an integer number (9806110260).

Almost surely, 2^19612220519 is an apocalyptic number.

19612220519 is a deficient number, since it is larger than the sum of its proper divisors (1).

19612220519 is an equidigital number, since it uses as much as digits as its factorization.

19612220519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 19612220519 in words is "nineteen billion, six hundred twelve million, two hundred twenty thousand, five hundred nineteen".