19027274479 has 4 divisors (see below), whose sum is σ = 19027592584. Its totient is φ = 19026956376.

The previous prime is 19027274473. The next prime is 19027274491. The reversal of 19027274479 is 97447272091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19027274479 - 2³ = 19027274471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19027274471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39252 + ... + 198985.

It is an arithmetic number, because the mean of its divisors is an integer number (4756898146).

Almost surely, 2^19027274479 is an apocalyptic number.

19027274479 is a deficient number, since it is larger than the sum of its proper divisors (318105).

19027274479 is an equidigital number, since it uses as much as digits as its factorization.

19027274479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318104.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 19027274479 in words is "nineteen billion, twenty-seven million, two hundred seventy-four thousand, four hundred seventy-nine".