4018678 has 4 divisors (see below), whose sum is σ = 6028020. Its totient is φ = 2009338.

The previous prime is 4018649. The next prime is 4018699. The reversal of 4018678 is 8768104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×4018678² = 32299545735368, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004668 + ... + 1004671.

It is an arithmetic number, because the mean of its divisors is an integer number (1507005).

Almost surely, 2^4018678 is an apocalyptic number.

4018678 is a deficient number, since it is larger than the sum of its proper divisors (2009342).

4018678 is a wasteful number, since it uses less digits than its factorization.

4018678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009341.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 4018678 is about 2004.6640616323. The cubic root of 4018678 is about 158.9868005867.

The spelling of 4018678 in words is "four million, eighteen thousand, six hundred seventy-eight".