19044431 has 8 divisors (see below), whose sum is σ = 21899904. Its totient is φ = 16222680.

The previous prime is 19044413. The next prime is 19044457. The reversal of 19044431 is 13444091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19044431 - 2⁶ = 19044367 is a prime.

It is a super-2 number, since 2×19044431² = 725380704227522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19044431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19044481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7205 + ... + 9486.

It is an arithmetic number, because the mean of its divisors is an integer number (2737488).

Almost surely, 2^19044431 is an apocalyptic number.

19044431 is a deficient number, since it is larger than the sum of its proper divisors (2855473).

19044431 is a wasteful number, since it uses less digits than its factorization.

19044431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16861.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 19044431 is about 4363.9925526976. The cubic root of 19044431 is about 267.0480025165.

The spelling of 19044431 in words is "nineteen million, forty-four thousand, four hundred thirty-one".