18051946833 has 8 divisors (see below), whose sum is σ = 24069892000. Its totient is φ = 12034316448.

The previous prime is 18051946813. The next prime is 18051946849. The reversal of 18051946833 is 33864915081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18051946833 - 2⁶ = 18051946769 is a prime.

It is a super-2 number, since 2×18051946833² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18051946813) 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, 150378 + ... + 242316.

It is an arithmetic number, because the mean of its divisors is an integer number (3008736500).

Almost surely, 2^18051946833 is an apocalyptic number.

It is an amenable number.

18051946833 is a deficient number, since it is larger than the sum of its proper divisors (6017945167).

18051946833 is an equidigital number, since it uses as much as digits as its factorization.

18051946833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157391.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 18051946833 in words is "eighteen billion, fifty-one million, nine hundred forty-six thousand, eight hundred thirty-three".