3781436 has 6 divisors (see below), whose sum is σ = 6617520. Its totient is φ = 1890716.

The previous prime is 3781433. The next prime is 3781447. The reversal of 3781436 is 6341873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781433) 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 as a sum of consecutive naturals, namely, 472676 + ... + 472683.

It is an arithmetic number, because the mean of its divisors is an integer number (1102920).

Almost surely, 2^3781436 is an apocalyptic number.

It is an amenable number.

3781436 is a deficient number, since it is larger than the sum of its proper divisors (2836084).

3781436 is a wasteful number, since it uses less digits than its factorization.

3781436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945363 (or 945361 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 3781436 is about 1944.5914738063. The cubic root of 3781436 is about 155.7945465410.

The spelling of 3781436 in words is "three million, seven hundred eighty-one thousand, four hundred thirty-six".