2449579861 has 8 divisors (see below), whose sum is σ = 2594179224. Its totient is φ = 2305036800.

The previous prime is 2449579837. The next prime is 2449579901. The reversal of 2449579861 is 1689759442.

It can be written as a sum of positive squares in 4 ways, for example, as 1120977361 + 1328602500 = 33481^2 + 36450^2 .

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

It is not a de Polignac number, because 2449579861 - 2⁵ = 2449579829 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 (2449579061) 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, 103761 + ... + 125161.

It is an arithmetic number, because the mean of its divisors is an integer number (324272403).

Almost surely, 2^2449579861 is an apocalyptic number.

It is an amenable number.

2449579861 is a deficient number, since it is larger than the sum of its proper divisors (144599363).

2449579861 is a wasteful number, since it uses less digits than its factorization.

2449579861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28151.

The product of its digits is 4354560, while the sum is 55.

The square root of 2449579861 is about 49493.2304562957. The cubic root of 2449579861 is about 1348.0226857165.

The spelling of 2449579861 in words is "two billion, four hundred forty-nine million, five hundred seventy-nine thousand, eight hundred sixty-one".