183685728980 has 24 divisors (see below), whose sum is σ = 415412341512. Its totient is φ = 67822422912.

The previous prime is 183685728929. The next prime is 183685728983. The reversal of 183685728980 is 89827586381.

183685728980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12261575824 + 171424153156 = 110732^2 + 414034^2 .

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183685728983) 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 7 ways as a sum of consecutive naturals, for example, 353241527 + ... + 353242046.

It is an arithmetic number, because the mean of its divisors is an integer number (17308847563).

Almost surely, 2^183685728980 is an apocalyptic number.

183685728980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

183685728980 is an abundant number, since it is smaller than the sum of its proper divisors (231726612532).

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

183685728980 is a wasteful number, since it uses less digits than its factorization.

183685728980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706483595 (or 706483593 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 183685728980 in words is "one hundred eighty-three billion, six hundred eighty-five million, seven hundred twenty-eight thousand, nine hundred eighty".