2081604893 has 2 divisors, whose sum is σ = 2081604894. Its totient is φ = 2081604892.

The previous prime is 2081604887. The next prime is 2081604923. The reversal of 2081604893 is 3984061802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1344102244 + 737502649 = 36662^2 + 27157^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081604893 - 2⁶ = 2081604829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2081604893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081604823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040802446 + 1040802447.

It is an arithmetic number, because the mean of its divisors is an integer number (1040802447).

Almost surely, 2^2081604893 is an apocalyptic number.

It is an amenable number.

2081604893 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081604893 is an equidigital number, since it uses as much as digits as its factorization.

2081604893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2081604893 is about 45624.6084147579. The cubic root of 2081604893 is about 1276.8290842302.

The spelling of 2081604893 in words is "two billion, eighty-one million, six hundred four thousand, eight hundred ninety-three".