3681522797 has 2 divisors, whose sum is σ = 3681522798. Its totient is φ = 3681522796.

The previous prime is 3681522763. The next prime is 3681522809. The reversal of 3681522797 is 7972251863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3423888196 + 257634601 = 58514^2 + 16051^2 .

It is a cyclic number.

It is not a de Polignac number, because 3681522797 - 2⁸ = 3681522541 is a prime.

It is a super-2 number, since 2×3681522797² = 27107220209661406418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3681522497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840761398 + 1840761399.

It is an arithmetic number, because the mean of its divisors is an integer number (1840761399).

Almost surely, 2^3681522797 is an apocalyptic number.

It is an amenable number.

3681522797 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681522797 is an equidigital number, since it uses as much as digits as its factorization.

3681522797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 3681522797 is about 60675.5535368240. The cubic root of 3681522797 is about 1544.1014520138.

The spelling of 3681522797 in words is "three billion, six hundred eighty-one million, five hundred twenty-two thousand, seven hundred ninety-seven".