1823604961 has 4 divisors (see below), whose sum is σ = 1839743172. Its totient is φ = 1807466752.

The previous prime is 1823604907. The next prime is 1823605001. The reversal of 1823604961 is 1694063281.

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 244734736 + 1578870225 = 15644^2 + 39735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1823604961 - 2¹⁷ = 1823473889 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1823604061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8068936 + ... + 8069161.

It is an arithmetic number, because the mean of its divisors is an integer number (459935793).

Almost surely, 2^1823604961 is an apocalyptic number.

It is an amenable number.

1823604961 is a deficient number, since it is larger than the sum of its proper divisors (16138211).

1823604961 is a wasteful number, since it uses less digits than its factorization.

1823604961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138210.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1823604961 is about 42703.6879086573. The cubic root of 1823604961 is about 1221.7347356698.

The spelling of 1823604961 in words is "one billion, eight hundred twenty-three million, six hundred four thousand, nine hundred sixty-one".