19045798 has 4 divisors (see below), whose sum is σ = 28568700. Its totient is φ = 9522898.

The previous prime is 19045777. The next prime is 19045801. The reversal of 19045798 is 89754091.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4761448 + ... + 4761451.

It is an arithmetic number, because the mean of its divisors is an integer number (7142175).

Almost surely, 2^19045798 is an apocalyptic number.

19045798 is a deficient number, since it is larger than the sum of its proper divisors (9522902).

19045798 is an equidigital number, since it uses as much as digits as its factorization.

19045798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522901.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 19045798 is about 4364.1491725192. The cubic root of 19045798 is about 267.0543918889.

The spelling of 19045798 in words is "nineteen million, forty-five thousand, seven hundred ninety-eight".