19049489 has 2 divisors, whose sum is σ = 19049490. Its totient is φ = 19049488.

The previous prime is 19049479. The next prime is 19049587. The reversal of 19049489 is 98494091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 3312400 = 3967^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 19049489 - 2²⁴ = 2272273 is a prime.

It is a super-2 number, since 2×19049489² = 725766062322242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19049479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9524744 + 9524745.

It is an arithmetic number, because the mean of its divisors is an integer number (9524745).

Almost surely, 2^19049489 is an apocalyptic number.

It is an amenable number.

19049489 is a deficient number, since it is larger than the sum of its proper divisors (1).

19049489 is an equidigital number, since it uses as much as digits as its factorization.

19049489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 19049489 is about 4364.5720294205. The cubic root of 19049489 is about 267.0716421347.

The spelling of 19049489 in words is "nineteen million, forty-nine thousand, four hundred eighty-nine".