853138690 has 8 divisors (see below), whose sum is σ = 1535649660. Its totient is φ = 341255472.

The previous prime is 853138681. The next prime is 853138717. The reversal of 853138690 is 96831358.

853138690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 841174009 + 11964681 = 29003^2 + 3459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×853138690² = 1455691248749832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42656925 + ... + 42656944.

Almost surely, 2^853138690 is an apocalyptic number.

853138690 is a deficient number, since it is larger than the sum of its proper divisors (682510970).

853138690 is a wasteful number, since it uses less digits than its factorization.

853138690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85313876.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 853138690 is about 29208.5379640954. The cubic root of 853138690 is about 948.4327584666.

The spelling of 853138690 in words is "eight hundred fifty-three million, one hundred thirty-eight thousand, six hundred ninety".