189959982 has 16 divisors (see below), whose sum is σ = 388755840. Its totient is φ = 61847352.

The previous prime is 189959969. The next prime is 189959983. The reversal of 189959982 is 289959981.

It is a super-2 number, since 2×189959982² = 72169589522880648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189959983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367882 + ... + 368397.

It is an arithmetic number, because the mean of its divisors is an integer number (24297240).

Almost surely, 2^189959982 is an apocalyptic number.

189959982 is an abundant number, since it is smaller than the sum of its proper divisors (198795858).

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

189959982 is a wasteful number, since it uses less digits than its factorization.

189959982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736327.

The product of its digits is 4199040, while the sum is 60.

The square root of 189959982 is about 13782.5970702187. The cubic root of 189959982 is about 574.8493437687.

Subtracting 189959982 from its reverse (289959981), we obtain a palindrome (99999999).

The spelling of 189959982 in words is "one hundred eighty-nine million, nine hundred fifty-nine thousand, nine hundred eighty-two".