3918253 has 4 divisors (see below), whose sum is σ = 3944700. Its totient is φ = 3891808.

The previous prime is 3918251. The next prime is 3918259. The reversal of 3918253 is 3528193.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3528193 = 43 ⋅82051.

It can be written as a sum of positive squares in 2 ways, for example, as 1085764 + 2832489 = 1042^2 + 1683^2 .

It is a cyclic number.

It is not a de Polignac number, because 3918253 - 2¹ = 3918251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13000 + ... + 13297.

It is an arithmetic number, because the mean of its divisors is an integer number (986175).

Almost surely, 2^3918253 is an apocalyptic number.

It is an amenable number.

3918253 is a deficient number, since it is larger than the sum of its proper divisors (26447).

3918253 is a wasteful number, since it uses less digits than its factorization.

3918253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26446.

The product of its digits is 6480, while the sum is 31.

The square root of 3918253 is about 1979.4577540327. The cubic root of 3918253 is about 157.6512765072.

The spelling of 3918253 in words is "three million, nine hundred eighteen thousand, two hundred fifty-three".