189860853 has 48 divisors (see below), whose sum is σ = 318777216. Its totient is φ = 98392320.

The previous prime is 189860843. The next prime is 189860857. The reversal of 189860853 is 358068981.

It is not a de Polignac number, because 189860853 - 2⁵ = 189860821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189860857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216051 + ... + 216927.

It is an arithmetic number, because the mean of its divisors is an integer number (6641192).

Almost surely, 2^189860853 is an apocalyptic number.

189860853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189860853 is a deficient number, since it is larger than the sum of its proper divisors (128916363).

189860853 is a wasteful number, since it uses less digits than its factorization.

189860853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 189860853 is about 13779.0004354452. Note that the first 3 decimals coincide. The cubic root of 189860853 is about 574.7493329574.

The spelling of 189860853 in words is "one hundred eighty-nine million, eight hundred sixty thousand, eight hundred fifty-three".