853849642 has 4 divisors (see below), whose sum is σ = 1280774466. Its totient is φ = 426924820.

The previous prime is 853849637. The next prime is 853849643. The reversal of 853849642 is 246948358.

853849642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 786297681 + 67551961 = 28041^2 + 8219^2 .

It is a super-2 number, since 2×853849642² = 1458118422287056328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (853849643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213462409 + ... + 213462412.

Almost surely, 2^853849642 is an apocalyptic number.

853849642 is a deficient number, since it is larger than the sum of its proper divisors (426924824).

853849642 is a wasteful number, since it uses less digits than its factorization.

853849642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426924823.

The product of its digits is 1658880, while the sum is 49.

The square root of 853849642 is about 29220.7057067416. The cubic root of 853849642 is about 948.6961400080.

The spelling of 853849642 in words is "eight hundred fifty-three million, eight hundred forty-nine thousand, six hundred forty-two".