4874395661 has 4 divisors (see below), whose sum is σ = 5042478300. Its totient is φ = 4706313024.

The previous prime is 4874395657. The next prime is 4874395667. The reversal of 4874395661 is 1665934784.

4874395661 is digitally balanced in base 3, 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 2 ways, for example, as 1506914761 + 3367480900 = 38819^2 + 58030^2 .

It is not a de Polignac number, because 4874395661 - 2² = 4874395657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4874395667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84041276 + ... + 84041333.

It is an arithmetic number, because the mean of its divisors is an integer number (1260619575).

Almost surely, 2^4874395661 is an apocalyptic number.

It is an amenable number.

4874395661 is a deficient number, since it is larger than the sum of its proper divisors (168082639).

4874395661 is a wasteful number, since it uses less digits than its factorization.

4874395661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168082638.

The product of its digits is 4354560, while the sum is 53.

The square root of 4874395661 is about 69816.8723232429. The cubic root of 4874395661 is about 1695.5356522412.

The spelling of 4874395661 in words is "four billion, eight hundred seventy-four million, three hundred ninety-five thousand, six hundred sixty-one".