3816855 has 48 divisors (see below), whose sum is σ = 7907040. Its totient is φ = 1741824.

The previous prime is 3816847. The next prime is 3816863. The reversal of 3816855 is 5586183.

It is an interprime number because it is at equal distance from previous prime (3816847) and next prime (3816863).

It is not a de Polignac number, because 3816855 - 2³ = 3816847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6327 + ... + 6903.

It is an arithmetic number, because the mean of its divisors is an integer number (164730).

Almost surely, 2^3816855 is an apocalyptic number.

3816855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3816855 is an abundant number, since it is smaller than the sum of its proper divisors (4090185).

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

3816855 is a wasteful number, since it uses less digits than its factorization.

3816855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 592 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 3816855 is about 1953.6773019104. The cubic root of 3816855 is about 156.2794547138.

It can be divided in two parts, 381 and 6855, that multiplied together give a triangular number (2611755 = T₂₂₈₅).

The spelling of 3816855 in words is "three million, eight hundred sixteen thousand, eight hundred fifty-five".