3968303988493 has 4 divisors (see below), whose sum is σ = 4273558141468. Its totient is φ = 3663049835520.

The previous prime is 3968303988479. The next prime is 3968303988541. The reversal of 3968303988493 is 3948893038693.

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 2354128656489 + 1614175332004 = 1534317^2 + 1270502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3968303988493 is a prime.

It is a super-2 number, since 2×3968303988493² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968303988403) 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, 152627076468 + ... + 152627076493.

It is an arithmetic number, because the mean of its divisors is an integer number (1068389535367).

Almost surely, 2^{3968303988493} is an apocalyptic number.

It is an amenable number.

3968303988493 is a deficient number, since it is larger than the sum of its proper divisors (305254152975).

3968303988493 is a wasteful number, since it uses less digits than its factorization.

3968303988493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305254152974.

The product of its (nonzero) digits is 725594112, while the sum is 73.

The spelling of 3968303988493 in words is "three trillion, nine hundred sixty-eight billion, three hundred three million, nine hundred eighty-eight thousand, four hundred ninety-three".