190909182820 has 24 divisors (see below), whose sum is σ = 400917585600. Its totient is φ = 76362091872.

The previous prime is 190909182811. The next prime is 190909182833. The reversal of 190909182820 is 28281909091.

190909182820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621921 + ... + 1735639.

It is an arithmetic number, because the mean of its divisors is an integer number (16704899400).

Almost surely, 2^190909182820 is an apocalyptic number.

190909182820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190909182820 is an abundant number, since it is smaller than the sum of its proper divisors (210008402780).

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

190909182820 is a wasteful number, since it uses less digits than its factorization.

190909182820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197667 (or 197665 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 49.

The spelling of 190909182820 in words is "one hundred ninety billion, nine hundred nine million, one hundred eighty-two thousand, eight hundred twenty".