18226688352 has 24 divisors (see below), whose sum is σ = 47845057176. Its totient is φ = 6075562752.

The previous prime is 18226688341. The next prime is 18226688423. The reversal of 18226688352 is 25388662281.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18226688295 and 18226688304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94930573 + ... + 94930764.

It is an arithmetic number, because the mean of its divisors is an integer number (1993544049).

Almost surely, 2^18226688352 is an apocalyptic number.

18226688352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18226688352 is an abundant number, since it is smaller than the sum of its proper divisors (29618368824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18226688352 is a wasteful number, since it uses less digits than its factorization.

18226688352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189861350 (or 189861342 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The spelling of 18226688352 in words is "eighteen billion, two hundred twenty-six million, six hundred eighty-eight thousand, three hundred fifty-two".