189844837790 has 8 divisors (see below), whose sum is σ = 341720708040. Its totient is φ = 75937935112.

The previous prime is 189844837781. The next prime is 189844837807. The reversal of 189844837790 is 97738448981.

189844837790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×189844837790² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189844837790.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9492241880 + ... + 9492241899.

It is an arithmetic number, because the mean of its divisors is an integer number (42715088505).

Almost surely, 2^189844837790 is an apocalyptic number.

189844837790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189844837790 is a deficient number, since it is larger than the sum of its proper divisors (151875870250).

189844837790 is a wasteful number, since it uses less digits than its factorization.

189844837790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18984483786.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 189844837790 in words is "one hundred eighty-nine billion, eight hundred forty-four million, eight hundred thirty-seven thousand, seven hundred ninety".