19366997479 has 2 divisors, whose sum is σ = 19366997480. Its totient is φ = 19366997478.

The previous prime is 19366997467. The next prime is 19366997509. The reversal of 19366997479 is 97479966391.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19366997479 - 2⁹ = 19366996967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19366997449) 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, 9683498739 + 9683498740.

It is an arithmetic number, because the mean of its divisors is an integer number (9683498740).

Almost surely, 2^19366997479 is an apocalyptic number.

19366997479 is a deficient number, since it is larger than the sum of its proper divisors (1).

19366997479 is an equidigital number, since it uses as much as digits as its factorization.

19366997479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138883248, while the sum is 70.

The spelling of 19366997479 in words is "nineteen billion, three hundred sixty-six million, nine hundred ninety-seven thousand, four hundred seventy-nine".