19144641 has 4 divisors (see below), whose sum is σ = 25526192. Its totient is φ = 12763092.

The previous prime is 19144637. The next prime is 19144649. The reversal of 19144641 is 14644191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19144641 - 2² = 19144637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19144599 and 19144608.

It is not an unprimeable number, because it can be changed into a prime (19144649) 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 3 ways as a sum of consecutive naturals, for example, 3190771 + ... + 3190776.

It is an arithmetic number, because the mean of its divisors is an integer number (6381548).

Almost surely, 2^19144641 is an apocalyptic number.

It is an amenable number.

19144641 is a deficient number, since it is larger than the sum of its proper divisors (6381551).

19144641 is an equidigital number, since it uses as much as digits as its factorization.

19144641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381550.

The product of its digits is 3456, while the sum is 30.

The square root of 19144641 is about 4375.4589473563. The cubic root of 19144641 is about 267.5155771638.

It can be divided in two parts, 1914 and 4641, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 19144641 in words is "nineteen million, one hundred forty-four thousand, six hundred forty-one".