4161021803 has 2 divisors, whose sum is σ = 4161021804. Its totient is φ = 4161021802.

The previous prime is 4161021797. The next prime is 4161021871. The reversal of 4161021803 is 3081201614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4161021803 - 2⁸ = 4161021547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4161021883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080510901 + 2080510902.

It is an arithmetic number, because the mean of its divisors is an integer number (2080510902).

Almost surely, 2^4161021803 is an apocalyptic number.

4161021803 is a deficient number, since it is larger than the sum of its proper divisors (1).

4161021803 is an equidigital number, since it uses as much as digits as its factorization.

4161021803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4161021803 is about 64505.9826915302. The cubic root of 4161021803 is about 1608.4219718110.

The spelling of 4161021803 in words is "four billion, one hundred sixty-one million, twenty-one thousand, eight hundred three".