19522140619 has 2 divisors, whose sum is σ = 19522140620. Its totient is φ = 19522140618.

The previous prime is 19522140527. The next prime is 19522140643. The reversal of 19522140619 is 91604122591.

It is a strong prime.

It is an emirp because it is prime and its reverse (91604122591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19522140619 - 2⁹ = 19522140107 is a prime.

It is a super-2 number, since 2×19522140619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19522144619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9761070309 + 9761070310.

It is an arithmetic number, because the mean of its divisors is an integer number (9761070310).

Almost surely, 2^19522140619 is an apocalyptic number.

19522140619 is a deficient number, since it is larger than the sum of its proper divisors (1).

19522140619 is an equidigital number, since it uses as much as digits as its factorization.

19522140619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 19522140619 in words is "nineteen billion, five hundred twenty-two million, one hundred forty thousand, six hundred nineteen".