19376794417 has 4 divisors (see below), whose sum is σ = 19448827380. Its totient is φ = 19304761456.

The previous prime is 19376794379. The next prime is 19376794469. The reversal of 19376794417 is 71449767391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71449767391 = 827 ⋅86396333.

It can be written as a sum of positive squares in 2 ways, for example, as 9816648241 + 9560146176 = 99079^2 + 97776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19376794417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19376794477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36016078 + ... + 36016615.

It is an arithmetic number, because the mean of its divisors is an integer number (4862206845).

Almost surely, 2^19376794417 is an apocalyptic number.

It is an amenable number.

19376794417 is a deficient number, since it is larger than the sum of its proper divisors (72032963).

19376794417 is an equidigital number, since it uses as much as digits as its factorization.

19376794417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72032962.

The product of its digits is 8001504, while the sum is 58.

The spelling of 19376794417 in words is "nineteen billion, three hundred seventy-six million, seven hundred ninety-four thousand, four hundred seventeen".