3816945 has 36 divisors (see below), whose sum is σ = 7282548. Its totient is φ = 1848000.

The previous prime is 3816941. The next prime is 3816973. The reversal of 3816945 is 5496183.

It can be written as a sum of positive squares in 2 ways, for example, as 2405601 + 1411344 = 1551^2 + 1188^2 .

It is not a de Polignac number, because 3816945 - 2² = 3816941 is a prime.

It is an alternating number because its digits alternate between odd and even.

Its product of digits (25920) is a multiple of the sum of its prime divisors (720).

It is not an unprimeable number, because it can be changed into a prime (3816941) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5095 + ... + 5795.

It is an arithmetic number, because the mean of its divisors is an integer number (202293).

Almost surely, 2^3816945 is an apocalyptic number.

It is an amenable number.

3816945 is a deficient number, since it is larger than the sum of its proper divisors (3465603).

3816945 is a wasteful number, since it uses less digits than its factorization.

3816945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 720 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3816945 is about 1953.7003352613. The cubic root of 3816945 is about 156.2806830410.

It can be divided in two parts, 3816 and 945, that added together give a square (4761 = 69²).

The spelling of 3816945 in words is "three million, eight hundred sixteen thousand, nine hundred forty-five".