3855018 has 16 divisors (see below), whose sum is σ = 7803936. Its totient is φ = 1269360.

The previous prime is 3855013. The next prime is 3855023. The reversal of 3855018 is 8105583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3855013) and next prime (3855023).

It is a super-2 number, since 2×3855018² = 29722327560648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855013) 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, 3373 + ... + 4368.

It is an arithmetic number, because the mean of its divisors is an integer number (487746).

Almost surely, 2^3855018 is an apocalyptic number.

3855018 is an abundant number, since it is smaller than the sum of its proper divisors (3948918).

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

3855018 is a wasteful number, since it uses less digits than its factorization.

3855018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7829.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 3855018 is about 1963.4199754510. The cubic root of 3855018 is about 156.7985841275.

The spelling of 3855018 in words is "three million, eight hundred fifty-five thousand, eighteen".