3868726128418 has 4 divisors (see below), whose sum is σ = 5803089192630. Its totient is φ = 1934363064208.

The previous prime is 3868726128391. The next prime is 3868726128419. The reversal of 3868726128418 is 8148216278683.

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

It can be written as a sum of positive squares in only one way, i.e., 3161557817929 + 707168310489 = 1778077^2 + 840933^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3868726128418.

It is not an unprimeable number, because it can be changed into a prime (3868726128419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967181532103 + ... + 967181532106.

Almost surely, 2^{3868726128418} is an apocalyptic number.

3868726128418 is a deficient number, since it is larger than the sum of its proper divisors (1934363064212).

3868726128418 is a wasteful number, since it uses less digits than its factorization.

3868726128418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934363064211.

The product of its digits is 49545216, while the sum is 64.

The spelling of 3868726128418 in words is "three trillion, eight hundred sixty-eight billion, seven hundred twenty-six million, one hundred twenty-eight thousand, four hundred eighteen".