19144493 has 2 divisors, whose sum is σ = 19144494. Its totient is φ = 19144492.

The previous prime is 19144483. The next prime is 19144519. The reversal of 19144493 is 39444191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15507844 + 3636649 = 3938^2 + 1907^2 .

It is an emirp because it is prime and its reverse (39444191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19144493 - 2¹⁶ = 19078957 is a prime.

It is a super-2 number, since 2×19144493² = 733023224454098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19144403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9572246 + 9572247.

It is an arithmetic number, because the mean of its divisors is an integer number (9572247).

Almost surely, 2^19144493 is an apocalyptic number.

It is an amenable number.

19144493 is a deficient number, since it is larger than the sum of its proper divisors (1).

19144493 is an equidigital number, since it uses as much as digits as its factorization.

19144493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 19144493 is about 4375.4420348120. The cubic root of 19144493 is about 267.5148878080.

The spelling of 19144493 in words is "nineteen million, one hundred forty-four thousand, four hundred ninety-three".