19139773379 has 4 divisors (see below), whose sum is σ = 19290480384. Its totient is φ = 18989066376.

The previous prime is 19139773361. The next prime is 19139773417. The reversal of 19139773379 is 97337793191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97337793191 = 24533 ⋅3967627.

It is a cyclic number.

It is not a de Polignac number, because 19139773379 - 2¹² = 19139769283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19139773349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75353312 + ... + 75353565.

It is an arithmetic number, because the mean of its divisors is an integer number (4822620096).

Almost surely, 2^19139773379 is an apocalyptic number.

19139773379 is a deficient number, since it is larger than the sum of its proper divisors (150707005).

19139773379 is a wasteful number, since it uses less digits than its factorization.

19139773379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150707004.

The product of its digits is 6751269, while the sum is 59.

The spelling of 19139773379 in words is "nineteen billion, one hundred thirty-nine million, seven hundred seventy-three thousand, three hundred seventy-nine".