19427296238 has 32 divisors (see below), whose sum is σ = 33527017920. Its totient is φ = 8270346240.

The previous prime is 19427296237. The next prime is 19427296247. The reversal of 19427296238 is 83269272491.

It is a self number, because there is not a number n which added to its sum of digits gives 19427296238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19427296237) 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, 1910648 + ... + 1920788.

It is an arithmetic number, because the mean of its divisors is an integer number (1047719310).

Almost surely, 2^19427296238 is an apocalyptic number.

19427296238 is a deficient number, since it is larger than the sum of its proper divisors (14099721682).

19427296238 is a wasteful number, since it uses less digits than its factorization.

19427296238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052.

The product of its digits is 2612736, while the sum is 53.

The spelling of 19427296238 in words is "nineteen billion, four hundred twenty-seven million, two hundred ninety-six thousand, two hundred thirty-eight".