19198044 has 36 divisors (see below), whose sum is σ = 48792744. Its totient is φ = 6364512.

The previous prime is 19197991. The next prime is 19198057. The reversal of 19198044 is 44089191.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5739 + ... + 8445.

It is an arithmetic number, because the mean of its divisors is an integer number (1355354).

Almost surely, 2^19198044 is an apocalyptic number.

It is an amenable number.

19198044 is an abundant number, since it is smaller than the sum of its proper divisors (29594700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19198044 is a wasteful number, since it uses less digits than its factorization.

19198044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914 (or 2909 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 19198044 is about 4381.5572574143. The cubic root of 19198044 is about 267.7640865932.

The spelling of 19198044 in words is "nineteen million, one hundred ninety-eight thousand, forty-four".