3851851 has 4 divisors (see below), whose sum is σ = 4054600. Its totient is φ = 3649104.

The previous prime is 3851839. The next prime is 3851857. The reversal of 3851851 is 1581583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1581583 = 43 ⋅36781.

It is a cyclic number.

It is not a de Polignac number, because 3851851 - 2⁵ = 3851819 is a prime.

It is a super-2 number, since 2×3851851² = 29673512252402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3851857) 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, 101346 + ... + 101383.

It is an arithmetic number, because the mean of its divisors is an integer number (1013650).

Almost surely, 2^3851851 is an apocalyptic number.

3851851 is a deficient number, since it is larger than the sum of its proper divisors (202749).

3851851 is a wasteful number, since it uses less digits than its factorization.

3851851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202748.

The product of its digits is 4800, while the sum is 31.

The square root of 3851851 is about 1962.6133088309. The cubic root of 3851851 is about 156.7556342923.

The spelling of 3851851 in words is "three million, eight hundred fifty-one thousand, eight hundred fifty-one".