3778493 has 4 divisors (see below), whose sum is σ = 3800508. Its totient is φ = 3756480.

The previous prime is 3778469. The next prime is 3778499. The reversal of 3778493 is 3948773.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3948773 = 97 ⋅40709.

It can be written as a sum of positive squares in 2 ways, for example, as 1338649 + 2439844 = 1157^2 + 1562^2 .

It is a cyclic number.

It is not a de Polignac number, because 3778493 - 2⁶ = 3778429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3778493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778499) 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, 10748 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (950127).

Almost surely, 2^3778493 is an apocalyptic number.

It is an amenable number.

3778493 is a deficient number, since it is larger than the sum of its proper divisors (22015).

3778493 is a wasteful number, since it uses less digits than its factorization.

3778493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22014.

The product of its digits is 127008, while the sum is 41.

The square root of 3778493 is about 1943.8346123063. The cubic root of 3778493 is about 155.7541190113.

The spelling of 3778493 in words is "three million, seven hundred seventy-eight thousand, four hundred ninety-three".