19144771459 has 16 divisors (see below), whose sum is σ = 22530998880. Its totient is φ = 16071477760.

The previous prime is 19144771421. The next prime is 19144771501. The reversal of 19144771459 is 95417744191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19144771459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19144771759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955924 + ... + 975745.

It is an arithmetic number, because the mean of its divisors is an integer number (1408187430).

Almost surely, 2^19144771459 is an apocalyptic number.

19144771459 is a deficient number, since it is larger than the sum of its proper divisors (3386227421).

19144771459 is a wasteful number, since it uses less digits than its factorization.

19144771459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931750.

The product of its digits is 1270080, while the sum is 52.

The spelling of 19144771459 in words is "nineteen billion, one hundred forty-four million, seven hundred seventy-one thousand, four hundred fifty-nine".