19139664841 has 8 divisors (see below), whose sum is σ = 21233527200. Its totient is φ = 17104784640.

The previous prime is 19139664781. The next prime is 19139664853. The reversal of 19139664841 is 14846693191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19139664841 - 2¹⁷ = 19139533769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19139664641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14744856 + ... + 14746153.

It is an arithmetic number, because the mean of its divisors is an integer number (2654190900).

Almost surely, 2^19139664841 is an apocalyptic number.

19139664841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19139664841 is a deficient number, since it is larger than the sum of its proper divisors (2093862359).

19139664841 is a wasteful number, since it uses less digits than its factorization.

19139664841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29491079.

The product of its digits is 1119744, while the sum is 52.

The spelling of 19139664841 in words is "nineteen billion, one hundred thirty-nine million, six hundred sixty-four thousand, eight hundred forty-one".