19498079 has 2 divisors, whose sum is σ = 19498080. Its totient is φ = 19498078.

The previous prime is 19498057. The next prime is 19498093. The reversal of 19498079 is 97089491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19498079 - 2²⁰ = 18449503 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19498679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9749039 + 9749040.

It is an arithmetic number, because the mean of its divisors is an integer number (9749040).

Almost surely, 2^19498079 is an apocalyptic number.

19498079 is a deficient number, since it is larger than the sum of its proper divisors (1).

19498079 is an equidigital number, since it uses as much as digits as its factorization.

19498079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 19498079 is about 4415.6629173885. The cubic root of 19498079 is about 269.1517917231.

The spelling of 19498079 in words is "nineteen million, four hundred ninety-eight thousand, seventy-nine".