18885630624 has 96 divisors (see below), whose sum is σ = 56796243840. Its totient is φ = 5382623232.

The previous prime is 18885630619. The next prime is 18885630629. The reversal of 18885630624 is 42603658881.

It is a happy number.

It is a Cunningham number, because it is equal to 137425²-1.

It is an interprime number because it is at equal distance from previous prime (18885630619) and next prime (18885630629).

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (18885630629) 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, 240492 + ... + 309204.

It is an arithmetic number, because the mean of its divisors is an integer number (591627540).

Almost surely, 2^18885630624 is an apocalyptic number.

18885630624 is a gapful number since it is divisible by the number (14) 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 18885630624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28398121920).

18885630624 is an abundant number, since it is smaller than the sum of its proper divisors (37910613216).

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

18885630624 is a wasteful number, since it uses less digits than its factorization.

18885630624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69142 (or 69134 counting only the distinct ones).

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

The spelling of 18885630624 in words is "eighteen billion, eight hundred eighty-five million, six hundred thirty thousand, six hundred twenty-four".