4194800081 has 2 divisors, whose sum is σ = 4194800082. Its totient is φ = 4194800080.

The previous prime is 4194800047. The next prime is 4194800111. The reversal of 4194800081 is 1800084914.

4194800081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2226990481 + 1967809600 = 47191^2 + 44360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4194800081 is a prime.

It is a super-2 number, since 2×4194800081² = 35192695439115213122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4194800041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2097400040 + 2097400041.

It is an arithmetic number, because the mean of its divisors is an integer number (2097400041).

Almost surely, 2^4194800081 is an apocalyptic number.

It is an amenable number.

4194800081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4194800081 is an equidigital number, since it uses as much as digits as its factorization.

4194800081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 4194800081 is about 64767.2763129653. The cubic root of 4194800081 is about 1612.7625219756.

Adding to 4194800081 its reverse (1800084914), we get a palindrome (5994884995).

The spelling of 4194800081 in words is "four billion, one hundred ninety-four million, eight hundred thousand, eighty-one".