19219136927 has 18 divisors (see below), whose sum is σ = 20298403944. Its totient is φ = 18162846240.

The previous prime is 19219136903. The next prime is 19219136933. The reversal of 19219136927 is 72963191291.

It is not a de Polignac number, because 19219136927 - 2¹² = 19219132831 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 (19219136947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91085852 + ... + 91086062.

It is an arithmetic number, because the mean of its divisors is an integer number (1127689108).

Almost surely, 2^19219136927 is an apocalyptic number.

19219136927 is a deficient number, since it is larger than the sum of its proper divisors (1079267017).

19219136927 is an frugal number, since it uses more digits than its factorization.

19219136927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 371 counting only the distinct ones).

The product of its digits is 367416, while the sum is 50.

The spelling of 19219136927 in words is "nineteen billion, two hundred nineteen million, one hundred thirty-six thousand, nine hundred twenty-seven".