19612214819 has 2 divisors, whose sum is σ = 19612214820. Its totient is φ = 19612214818.

The previous prime is 19612214813. The next prime is 19612214833. The reversal of 19612214819 is 91841221691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19612214819 - 2⁴ = 19612214803 is a prime.

It is a super-2 number, since 2×19612214819² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19612214819.

It is not a weakly prime, because it can be changed into another prime (19612214813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9806107409 + 9806107410.

It is an arithmetic number, because the mean of its divisors is an integer number (9806107410).

Almost surely, 2^19612214819 is an apocalyptic number.

19612214819 is a deficient number, since it is larger than the sum of its proper divisors (1).

19612214819 is an equidigital number, since it uses as much as digits as its factorization.

19612214819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 44.

The spelling of 19612214819 in words is "nineteen billion, six hundred twelve million, two hundred fourteen thousand, eight hundred nineteen".