189864711 has 12 divisors (see below), whose sum is σ = 283706280. Its totient is φ = 122211600.

The previous prime is 189864691. The next prime is 189864713. The reversal of 189864711 is 117468981.

It is a happy number.

It is not a de Polignac number, because 189864711 - 2¹¹ = 189862663 is a prime.

It is a super-2 number, since 2×189864711² = 72097216966227042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189864713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363465 + ... + 363986.

It is an arithmetic number, because the mean of its divisors is an integer number (23642190).

Almost surely, 2^189864711 is an apocalyptic number.

189864711 is a deficient number, since it is larger than the sum of its proper divisors (93841569).

189864711 is a wasteful number, since it uses less digits than its factorization.

189864711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727486 (or 727483 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 189864711 is about 13779.1404303752. The cubic root of 189864711 is about 574.7532259276.

It can be divided in two parts, 189 and 864711, that added together give a square (864900 = 930²).

The spelling of 189864711 in words is "one hundred eighty-nine million, eight hundred sixty-four thousand, seven hundred eleven".