185479043189820 has 96 divisors (see below), whose sum is σ = 532454917091328. Its totient is φ = 48220353871872.

The previous prime is 185479043189777. The next prime is 185479043189837. The reversal of 185479043189820 is 28981340974581.

It is a super-2 number, since 2×185479043189820² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127237732 + ... + 128687211.

It is an arithmetic number, because the mean of its divisors is an integer number (5546405386368).

Almost surely, 2^{185479043189820} is an apocalyptic number.

185479043189820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

185479043189820 is an abundant number, since it is smaller than the sum of its proper divisors (346975873901508).

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

185479043189820 is a wasteful number, since it uses less digits than its factorization.

185479043189820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255925259 (or 255925257 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 69.

The spelling of 185479043189820 in words is "one hundred eighty-five trillion, four hundred seventy-nine billion, forty-three million, one hundred eighty-nine thousand, eight hundred twenty".