4018634 has 4 divisors (see below), whose sum is σ = 6027954. Its totient is φ = 2009316.

The previous prime is 4018631. The next prime is 4018643. The reversal of 4018634 is 4368104.

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

It can be written as a sum of positive squares in only one way, i.e., 3988009 + 30625 = 1997^2 + 175^2 .

It is a super-2 number, since 2×4018634² = 32298838451912, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4018631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004657 + ... + 1004660.

Almost surely, 2^4018634 is an apocalyptic number.

4018634 is a deficient number, since it is larger than the sum of its proper divisors (2009320).

4018634 is a wasteful number, since it uses less digits than its factorization.

4018634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009319.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 4018634 is about 2004.6530871949. The cubic root of 4018634 is about 158.9862203424.

The spelling of 4018634 in words is "four million, eighteen thousand, six hundred thirty-four".