189983311 has 4 divisors (see below), whose sum is σ = 217123792. Its totient is φ = 162842832.

The previous prime is 189983293. The next prime is 189983317. The reversal of 189983311 is 113389981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189983311 - 2¹⁷ = 189852239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189983317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13570230 + ... + 13570243.

It is an arithmetic number, because the mean of its divisors is an integer number (54280948).

Almost surely, 2^189983311 is an apocalyptic number.

189983311 is a deficient number, since it is larger than the sum of its proper divisors (27140481).

189983311 is an equidigital number, since it uses as much as digits as its factorization.

189983311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27140480.

The product of its digits is 46656, while the sum is 43.

The square root of 189983311 is about 13783.4433651392. The cubic root of 189983311 is about 574.8728752361.

The spelling of 189983311 in words is "one hundred eighty-nine million, nine hundred eighty-three thousand, three hundred eleven".