18280774319 has 8 divisors (see below), whose sum is σ = 18503651712. Its totient is φ = 18057959640.

The previous prime is 18280774313. The next prime is 18280774357. The reversal of 18280774319 is 91347708281.

It is a happy number.

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 18280774319 - 2²⁸ = 18012338863 is a prime.

It is a super-2 number, since 2×18280774319² (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 (18280774313) 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 7 ways as a sum of consecutive naturals, for example, 878732 + ... + 899294.

It is an arithmetic number, because the mean of its divisors is an integer number (2312956464).

Almost surely, 2^18280774319 is an apocalyptic number.

18280774319 is a deficient number, since it is larger than the sum of its proper divisors (222877393).

18280774319 is a wasteful number, since it uses less digits than its factorization.

18280774319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31357.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 18280774319 in words is "eighteen billion, two hundred eighty million, seven hundred seventy-four thousand, three hundred nineteen".