3778791 has 8 divisors (see below), whose sum is σ = 5051760. Its totient is φ = 2512512.

The previous prime is 3778771. The next prime is 3778793. The reversal of 3778791 is 1978773.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3778791 - 2⁵ = 3778759 is a prime.

It is a super-2 number, since 2×3778791² = 28558522843362, which contains 22 as substring.

3778791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (631470).

Almost surely, 2^3778791 is an apocalyptic number.

3778791 is a deficient number, since it is larger than the sum of its proper divisors (1272969).

3778791 is a wasteful number, since it uses less digits than its factorization.

3778791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345.

The product of its digits is 74088, while the sum is 42.

The square root of 3778791 is about 1943.9112634068. The cubic root of 3778791 is about 155.7582135455.

The spelling of 3778791 in words is "three million, seven hundred seventy-eight thousand, seven hundred ninety-one".