3768391 has 16 divisors (see below), whose sum is σ = 4359168. Its totient is φ = 3225600.

The previous prime is 3768377. The next prime is 3768409. The reversal of 3768391 is 1938673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3768391 is a prime.

It is a super-3 number, since 3×3768391³ (a number of 21 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3768391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3768301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14535 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (272448).

Almost surely, 2^3768391 is an apocalyptic number.

3768391 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3768391 is a deficient number, since it is larger than the sum of its proper divisors (590777).

3768391 is a wasteful number, since it uses less digits than its factorization.

3768391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 27216, while the sum is 37.

The square root of 3768391 is about 1941.2344010964. The cubic root of 3768391 is about 155.6151895129.

The spelling of 3768391 in words is "three million, seven hundred sixty-eight thousand, three hundred ninety-one".