609819853 has 4 divisors (see below), whose sum is σ = 609880348. Its totient is φ = 609759360.

The previous prime is 609819799. The next prime is 609819883. The reversal of 609819853 is 358918906.

It is the 10082-nd star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 238795209 + 371024644 = 15453^2 + 19262^2 .

It is a cyclic number.

It is not a de Polignac number, because 609819853 - 2¹³ = 609811661 is a prime.

It is a super-2 number, since 2×609819853² = 743760506225883218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 609819797 and 609819806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609819883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11076 + ... + 36637.

It is an arithmetic number, because the mean of its divisors is an integer number (152470087).

Almost surely, 2^609819853 is an apocalyptic number.

It is an amenable number.

609819853 is a deficient number, since it is larger than the sum of its proper divisors (60495).

609819853 is a wasteful number, since it uses less digits than its factorization.

609819853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60494.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 609819853 is about 24694.5308317449. The cubic root of 609819853 is about 848.0091135583.

The spelling of 609819853 in words is "six hundred nine million, eight hundred nineteen thousand, eight hundred fifty-three".