189982637790 has 32 divisors (see below), whose sum is σ = 497409088896. Its totient is φ = 46056396960.

The previous prime is 189982637723. The next prime is 189982637837. The reversal of 189982637790 is 97736289981.

189982637790 is digitally balanced in base 3 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×189982637790³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287852152 + ... + 287852811.

It is an arithmetic number, because the mean of its divisors is an integer number (15544034028).

Almost surely, 2^189982637790 is an apocalyptic number.

189982637790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189982637790 is an abundant number, since it is smaller than the sum of its proper divisors (307426451106).

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

189982637790 is a wasteful number, since it uses less digits than its factorization.

189982637790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575704984.

The product of its (nonzero) digits is 82301184, while the sum is 69.

The spelling of 189982637790 in words is "one hundred eighty-nine billion, nine hundred eighty-two million, six hundred thirty-seven thousand, seven hundred ninety".