19138865295 has 32 divisors (see below), whose sum is σ = 33414280704. Its totient is φ = 9277155200.

The previous prime is 19138865261. The next prime is 19138865297. The reversal of 19138865295 is 59256883191.

It is a happy number.

It is not a de Polignac number, because 19138865295 - 2¹⁰ = 19138864271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138865297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791809 + ... + 815621.

It is an arithmetic number, because the mean of its divisors is an integer number (1044196272).

Almost surely, 2^19138865295 is an apocalyptic number.

19138865295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19138865295 is a deficient number, since it is larger than the sum of its proper divisors (14275415409).

19138865295 is a wasteful number, since it uses less digits than its factorization.

19138865295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28703.

The product of its digits is 4665600, while the sum is 57.

The spelling of 19138865295 in words is "nineteen billion, one hundred thirty-eight million, eight hundred sixty-five thousand, two hundred ninety-five".