3868516997 has 4 divisors (see below), whose sum is σ = 3876909036. Its totient is φ = 3860124960.

The previous prime is 3868516969. The next prime is 3868516999. The reversal of 3868516997 is 7996158683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2952183556 + 916333441 = 54334^2 + 30271^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868516997 - 2⁶ = 3868516933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868516999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4195328 + ... + 4196249.

It is an arithmetic number, because the mean of its divisors is an integer number (969227259).

Almost surely, 2^3868516997 is an apocalyptic number.

It is an amenable number.

3868516997 is a deficient number, since it is larger than the sum of its proper divisors (8392039).

3868516997 is an equidigital number, since it uses as much as digits as its factorization.

3868516997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392038.

The product of its digits is 19595520, while the sum is 62.

The square root of 3868516997 is about 62197.4034586654. The cubic root of 3868516997 is about 1569.8138983165.

The spelling of 3868516997 in words is "three billion, eight hundred sixty-eight million, five hundred sixteen thousand, nine hundred ninety-seven".