3790781 has 2 divisors, whose sum is σ = 3790782. Its totient is φ = 3790780.

The previous prime is 3790771. The next prime is 3790783. The reversal of 3790781 is 1870973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2374681 + 1416100 = 1541^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 3790781 - 2¹⁰ = 3789757 is a prime.

It is a super-2 number, since 2×3790781² = 28740041179922, which contains 22 as substring.

Together with 3790783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3790783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895390 + 1895391.

It is an arithmetic number, because the mean of its divisors is an integer number (1895391).

Almost surely, 2^3790781 is an apocalyptic number.

It is an amenable number.

3790781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3790781 is an equidigital number, since it uses as much as digits as its factorization.

3790781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 3790781 is about 1946.9928094372. The cubic root of 3790781 is about 155.9227784585.

The spelling of 3790781 in words is "three million, seven hundred ninety thousand, seven hundred eighty-one".