19318272007 has 4 divisors (see below), whose sum is σ = 19327918680. Its totient is φ = 19308625336.

The previous prime is 19318271993. The next prime is 19318272013. The reversal of 19318272007 is 70027281391.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19318272007 - 2²³ = 19309883399 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 (19318972007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820332 + ... + 4824337.

It is an arithmetic number, because the mean of its divisors is an integer number (4831979670).

Almost surely, 2^19318272007 is an apocalyptic number.

19318272007 is a deficient number, since it is larger than the sum of its proper divisors (9646673).

19318272007 is an equidigital number, since it uses as much as digits as its factorization.

19318272007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646672.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 19318272007 in words is "nineteen billion, three hundred eighteen million, two hundred seventy-two thousand, seven".