1849646461 has 8 divisors (see below), whose sum is σ = 2109099384. Its totient is φ = 1606932480.

The previous prime is 1849646459. The next prime is 1849646473. The reversal of 1849646461 is 1646469481.

It can be written as a sum of positive squares in 4 ways, for example, as 2280100 + 1847366361 = 1510^2 + 42981^2 .

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

It is not a de Polignac number, because 1849646461 - 2¹ = 1849646459 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 (1849646441) 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, 4184500 + ... + 4184941.

It is an arithmetic number, because the mean of its divisors is an integer number (263637423).

Almost surely, 2^1849646461 is an apocalyptic number.

It is an amenable number.

1849646461 is a deficient number, since it is larger than the sum of its proper divisors (259452923).

1849646461 is a wasteful number, since it uses less digits than its factorization.

1849646461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8369471.

The product of its digits is 995328, while the sum is 49.

The square root of 1849646461 is about 43007.5163314507. The cubic root of 1849646461 is about 1227.5228221402.

The spelling of 1849646461 in words is "one billion, eight hundred forty-nine million, six hundred forty-six thousand, four hundred sixty-one".