183138480 has 360 divisors, whose sum is σ = 744260400. Its totient is φ = 40190976.

The previous prime is 183138469. The next prime is 183138481. The reversal of 183138480 is 84831381.

183138480 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (183138481) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1023031 + ... + 1023209.

It is an arithmetic number, because the mean of its divisors is an integer number (2067390).

Almost surely, 2^183138480 is an apocalyptic number.

183138480 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 183138480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372130200).

183138480 is an abundant number, since it is smaller than the sum of its proper divisors (561121920).

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

183138480 is a wasteful number, since it uses less digits than its factorization.

183138480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 183138480 is about 13532.8666586204. The cubic root of 183138480 is about 567.8843082497.

The spelling of 183138480 in words is "one hundred eighty-three million, one hundred thirty-eight thousand, four hundred eighty".