3781822 has 16 divisors (see below), whose sum is σ = 6218352. Its totient is φ = 1710720.

The previous prime is 3781819. The next prime is 3781829. The reversal of 3781822 is 2281873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8518 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (388647).

Almost surely, 2^3781822 is an apocalyptic number.

3781822 is the 1588-th pentagonal number.

3781822 is a deficient number, since it is larger than the sum of its proper divisors (2436530).

3781822 is a wasteful number, since it uses less digits than its factorization.

3781822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843.

The product of its digits is 5376, while the sum is 31.

The square root of 3781822 is about 1944.6907209117. The cubic root of 3781822 is about 155.7998474063.

The spelling of 3781822 in words is "three million, seven hundred eighty-one thousand, eight hundred twenty-two".