189683851 has 12 divisors (see below), whose sum is σ = 220877280. Its totient is φ = 162420720.

The previous prime is 189683843. The next prime is 189683861. The reversal of 189683851 is 158386981.

189683851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189683851 - 2³ = 189683843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189683795 and 189683804.

It is not an unprimeable number, because it can be changed into a prime (189683861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90645 + ... + 92713.

It is an arithmetic number, because the mean of its divisors is an integer number (18406440).

Almost surely, 2^189683851 is an apocalyptic number.

189683851 is a deficient number, since it is larger than the sum of its proper divisors (31193429).

189683851 is a wasteful number, since it uses less digits than its factorization.

189683851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954 (or 3947 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The square root of 189683851 is about 13772.5760480747. The cubic root of 189683851 is about 574.5706698117.

It can be divided in two parts, 18 and 9683851, that added together give a palindrome (9683869).

The spelling of 189683851 in words is "one hundred eighty-nine million, six hundred eighty-three thousand, eight hundred fifty-one".