4849531661 has 8 divisors (see below), whose sum is σ = 5242897464. Its totient is φ = 4459069440.

The previous prime is 4849531657. The next prime is 4849531667. The reversal of 4849531661 is 1661359484.

It can be written as a sum of positive squares in 4 ways, for example, as 682829161 + 4166702500 = 26131^2 + 64550^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4849531661 - 2² = 4849531657 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 (4849531667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722420 + ... + 729101.

It is an arithmetic number, because the mean of its divisors is an integer number (655362183).

Almost surely, 2^4849531661 is an apocalyptic number.

It is an amenable number.

4849531661 is a deficient number, since it is larger than the sum of its proper divisors (393365803).

4849531661 is a wasteful number, since it uses less digits than its factorization.

4849531661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451791.

The product of its digits is 622080, while the sum is 47.

The square root of 4849531661 is about 69638.5788266820. The cubic root of 4849531661 is about 1692.6477944985.

The spelling of 4849531661 in words is "four billion, eight hundred forty-nine million, five hundred thirty-one thousand, six hundred sixty-one".