19427197364 has 6 divisors (see below), whose sum is σ = 33997595394. Its totient is φ = 9713598680.

The previous prime is 19427197313. The next prime is 19427197379. The reversal of 19427197364 is 46379172491.

It can be written as a sum of positive squares in only one way, i.e., 18327744400 + 1099452964 = 135380^2 + 33158^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2428399667 + ... + 2428399674.

It is an arithmetic number, because the mean of its divisors is an integer number (5666265899).

Almost surely, 2^19427197364 is an apocalyptic number.

It is an amenable number.

19427197364 is a deficient number, since it is larger than the sum of its proper divisors (14570398030).

19427197364 is a wasteful number, since it uses less digits than its factorization.

19427197364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856799345 (or 4856799343 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The spelling of 19427197364 in words is "nineteen billion, four hundred twenty-seven million, one hundred ninety-seven thousand, three hundred sixty-four".