4081355797 has 2 divisors, whose sum is σ = 4081355798. Its totient is φ = 4081355796.

The previous prime is 4081355791. The next prime is 4081355821. The reversal of 4081355797 is 7975531804.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3122462641 + 958893156 = 55879^2 + 30966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4081355797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4081355797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4081355791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040677898 + 2040677899.

It is an arithmetic number, because the mean of its divisors is an integer number (2040677899).

Almost surely, 2^4081355797 is an apocalyptic number.

It is an amenable number.

4081355797 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081355797 is an equidigital number, since it uses as much as digits as its factorization.

4081355797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 4081355797 is about 63885.4897218453. The cubic root of 4081355797 is about 1598.0909257876.

The spelling of 4081355797 in words is "four billion, eighty-one million, three hundred fifty-five thousand, seven hundred ninety-seven".