1846474649 has 4 divisors (see below), whose sum is σ = 1847011620. Its totient is φ = 1845937680.

The previous prime is 1846474639. The next prime is 1846474681. The reversal of 1846474649 is 9464746481.

It is a happy number.

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 381499024 + 1464975625 = 19532^2 + 38275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1846474649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1846474649.

It is not an unprimeable number, because it can be changed into a prime (1846474639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263294 + ... + 270215.

It is an arithmetic number, because the mean of its divisors is an integer number (461752905).

Almost surely, 2^1846474649 is an apocalyptic number.

It is an amenable number.

1846474649 is a deficient number, since it is larger than the sum of its proper divisors (536971).

1846474649 is an equidigital number, since it uses as much as digits as its factorization.

1846474649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536970.

The product of its digits is 4644864, while the sum is 53.

The square root of 1846474649 is about 42970.6254201635. The cubic root of 1846474649 is about 1226.8207601772.

The spelling of 1846474649 in words is "one billion, eight hundred forty-six million, four hundred seventy-four thousand, six hundred forty-nine".