3815946 has 12 divisors (see below), whose sum is σ = 8267922. Its totient is φ = 1271976.

The previous prime is 3815927. The next prime is 3815957. The reversal of 3815946 is 6495183.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 164025 = 1911^2 + 405^2 .

It is a super-2 number, since 2×3815946² = 29122887749832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3815946.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105981 + ... + 106016.

Almost surely, 2^3815946 is an apocalyptic number.

3815946 is an abundant number, since it is smaller than the sum of its proper divisors (4451976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3815946 is a wasteful number, since it uses less digits than its factorization.

3815946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212005 (or 212002 counting only the distinct ones).

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

The square root of 3815946 is about 1953.4446498429. Note that the first 3 decimals coincide. The cubic root of 3815946 is about 156.2670475266.

It can be divided in two parts, 3815 and 946, that added together give a square (4761 = 69²).

The spelling of 3815946 in words is "three million, eight hundred fifteen thousand, nine hundred forty-six".