20498419 has 2 divisors, whose sum is σ = 20498420. Its totient is φ = 20498418.

The previous prime is 20498371. The next prime is 20498453. The reversal of 20498419 is 91489402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20498419 is a prime.

It is a super-2 number, since 2×20498419² = 840370362999122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20498459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10249209 + 10249210.

It is an arithmetic number, because the mean of its divisors is an integer number (10249210).

Almost surely, 2^20498419 is an apocalyptic number.

20498419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20498419 is an equidigital number, since it uses as much as digits as its factorization.

20498419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 20498419 is about 4527.5179734596. The cubic root of 20498419 is about 273.6781478472.

The spelling of 20498419 in words is "twenty million, four hundred ninety-eight thousand, four hundred nineteen".