19198801 has 2 divisors, whose sum is σ = 19198802. Its totient is φ = 19198800.

The previous prime is 19198789. The next prime is 19198847. The reversal of 19198801 is 10889191.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13068225 + 6130576 = 3615^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 19198801 - 2²³ = 10810193 is a prime.

It is not a weakly prime, because it can be changed into another prime (19198601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9599400 + 9599401.

It is an arithmetic number, because the mean of its divisors is an integer number (9599401).

Almost surely, 2^19198801 is an apocalyptic number.

It is an amenable number.

19198801 is a deficient number, since it is larger than the sum of its proper divisors (1).

19198801 is an equidigital number, since it uses as much as digits as its factorization.

19198801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 19198801 is about 4381.6436413748. The cubic root of 19198801 is about 267.7676059578.

The spelling of 19198801 in words is "nineteen million, one hundred ninety-eight thousand, eight hundred one".