3918265 has 12 divisors (see below), whose sum is σ = 5092524. Its totient is φ = 2892864.

The previous prime is 3918259. The next prime is 3918269. The reversal of 3918265 is 5628193.

It can be written as a sum of positive squares in 6 ways, for example, as 1218816 + 2699449 = 1104^2 + 1643^2 .

It is not a de Polignac number, because 3918265 - 2⁷ = 3918137 is a prime.

It is a super-2 number, since 2×3918265² = 30705601220450, which contains 22 as substring.

It is a Duffinian number.

3918265 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3918265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1474 + ... + 3163.

It is an arithmetic number, because the mean of its divisors is an integer number (424377).

Almost surely, 2^3918265 is an apocalyptic number.

It is an amenable number.

3918265 is a deficient number, since it is larger than the sum of its proper divisors (1174259).

3918265 is a wasteful number, since it uses less digits than its factorization.

3918265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4655 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 3918265 is about 1979.4607851635. The cubic root of 3918265 is about 157.6514374475.

The spelling of 3918265 in words is "three million, nine hundred eighteen thousand, two hundred sixty-five".