18351683476 has 48 divisors (see below), whose sum is σ = 37727585280. Its totient is φ = 7646849280.

The previous prime is 18351683473. The next prime is 18351683477. The reversal of 18351683476 is 67438615381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18351683473) 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 15 ways as a sum of consecutive naturals, for example, 309085 + ... + 363643.

It is an arithmetic number, because the mean of its divisors is an integer number (785991360).

Almost surely, 2^18351683476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18351683476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18863792640).

18351683476 is an abundant number, since it is smaller than the sum of its proper divisors (19375901804).

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

18351683476 is a wasteful number, since it uses less digits than its factorization.

18351683476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54904 (or 54902 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 18351683476 in words is "eighteen billion, three hundred fifty-one million, six hundred eighty-three thousand, four hundred seventy-six".