19021849 has 12 divisors (see below), whose sum is σ = 24139728. Its totient is φ = 14821800.

The previous prime is 19021843. The next prime is 19021901. The reversal of 19021849 is 94812091.

It is not a de Polignac number, because 19021849 - 2⁷ = 19021721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19021843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17107 + ... + 18184.

It is an arithmetic number, because the mean of its divisors is an integer number (2011644).

Almost surely, 2^19021849 is an apocalyptic number.

It is an amenable number.

19021849 is a deficient number, since it is larger than the sum of its proper divisors (5117879).

19021849 is a wasteful number, since it uses less digits than its factorization.

19021849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35316 (or 35309 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19021849 is about 4361.4044756248. The cubic root of 19021849 is about 266.9424097386.

The spelling of 19021849 in words is "nineteen million, twenty-one thousand, eight hundred forty-nine".