210139853 has 12 divisors (see below), whose sum is σ = 263978400. Its totient is φ = 163744680.

The previous prime is 210139849. The next prime is 210139861. The reversal of 210139853 is 358931012.

It is not a de Polignac number, because 210139853 - 2² = 210139849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210139843) 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, 123203 + ... + 124896.

It is an arithmetic number, because the mean of its divisors is an integer number (21998200).

Almost surely, 2^210139853 is an apocalyptic number.

It is an amenable number.

210139853 is a deficient number, since it is larger than the sum of its proper divisors (53838547).

210139853 is a wasteful number, since it uses less digits than its factorization.

210139853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248128 (or 248117 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 210139853 is about 14496.2013300037. The cubic root of 210139853 is about 594.5241144590.

The spelling of 210139853 in words is "two hundred ten million, one hundred thirty-nine thousand, eight hundred fifty-three".