18016792919 has 4 divisors (see below), whose sum is σ = 18285700344. Its totient is φ = 17747885496.

The previous prime is 18016792903. The next prime is 18016792943. The reversal of 18016792919 is 91929761081.

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 18016792919 - 2⁴ = 18016792903 is a prime.

It is a super-2 number, since 2×18016792919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18016792949) 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, 134453612 + ... + 134453745.

It is an arithmetic number, because the mean of its divisors is an integer number (4571425086).

Almost surely, 2^18016792919 is an apocalyptic number.

18016792919 is a deficient number, since it is larger than the sum of its proper divisors (268907425).

18016792919 is an equidigital number, since it uses as much as digits as its factorization.

18016792919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268907424.

The product of its (nonzero) digits is 489888, while the sum is 53.

The spelling of 18016792919 in words is "eighteen billion, sixteen million, seven hundred ninety-two thousand, nine hundred nineteen".