18834646480 has 80 divisors (see below), whose sum is σ = 47313471744. Its totient is φ = 6931560960.

The previous prime is 18834646459. The next prime is 18834646483. The reversal of 18834646480 is 8464643881.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18834646483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289785 + ... + 348775.

Almost surely, 2^18834646480 is an apocalyptic number.

18834646480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18834646480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23656735872).

18834646480 is an abundant number, since it is smaller than the sum of its proper divisors (28478825264).

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

18834646480 is a wasteful number, since it uses less digits than its factorization.

18834646480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59324 (or 59318 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 52.

The spelling of 18834646480 in words is "eighteen billion, eight hundred thirty-four million, six hundred forty-six thousand, four hundred eighty".