18419429980 has 96 divisors (see below), whose sum is σ = 44596887552. Its totient is φ = 6259680000.

The previous prime is 18419429971. The next prime is 18419429981. The reversal of 18419429980 is 8992491481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419429981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16002405 + ... + 16003555.

It is an arithmetic number, because the mean of its divisors is an integer number (464550912).

Almost surely, 2^18419429980 is an apocalyptic number.

18419429980 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 18419429980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22298443776).

18419429980 is an abundant number, since it is smaller than the sum of its proper divisors (26177457572).

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

18419429980 is a wasteful number, since it uses less digits than its factorization.

18419429980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 18419429980 in words is "eighteen billion, four hundred nineteen million, four hundred twenty-nine thousand, nine hundred eighty".