3807899681 has 2 divisors, whose sum is σ = 3807899682. Its totient is φ = 3807899680.

The previous prime is 3807899633. The next prime is 3807899699. The reversal of 3807899681 is 1869987083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3093139456 + 714760225 = 55616^2 + 26735^2 .

It is a cyclic number.

It is not a de Polignac number, because 3807899681 - 2²² = 3803705377 is a prime.

It is a super-2 number, since 2×3807899681² = 29000199961119803522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3807899681.

It is not a weakly prime, because it can be changed into another prime (3807892681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903949840 + 1903949841.

It is an arithmetic number, because the mean of its divisors is an integer number (1903949841).

Almost surely, 2^3807899681 is an apocalyptic number.

It is an amenable number.

3807899681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3807899681 is an equidigital number, since it uses as much as digits as its factorization.

3807899681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 3807899681 is about 61708.1816374458. The cubic root of 3807899681 is about 1561.5713512933.

The spelling of 3807899681 in words is "three billion, eight hundred seven million, eight hundred ninety-nine thousand, six hundred eighty-one".