4018238 has 16 divisors (see below), whose sum is σ = 7188480. Its totient is φ = 1647096.

The previous prime is 4018207. The next prime is 4018243. The reversal of 4018238 is 8328104.

It is a super-2 number, since 2×4018238² = 32292473249288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5918 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (449280).

Almost surely, 2^4018238 is an apocalyptic number.

4018238 is a deficient number, since it is larger than the sum of its proper divisors (3170242).

4018238 is a wasteful number, since it uses less digits than its factorization.

4018238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 4018238 is about 2004.5543145547. The cubic root of 4018238 is about 158.9809979533.

The spelling of 4018238 in words is "four million, eighteen thousand, two hundred thirty-eight".