4000018312 has 16 divisors (see below), whose sum is σ = 7512399360. Its totient is φ = 1996711824.

The previous prime is 4000018307. The next prime is 4000018313. The reversal of 4000018312 is 2138100004.

It is a self number, because there is not a number n which added to its sum of digits gives 4000018312.

It is not an unprimeable number, because it can be changed into a prime (4000018313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407008 + ... + 416719.

It is an arithmetic number, because the mean of its divisors is an integer number (469524960).

Almost surely, 2^4000018312 is an apocalyptic number.

It is an amenable number.

4000018312 is a deficient number, since it is larger than the sum of its proper divisors (3512381048).

4000018312 is a wasteful number, since it uses less digits than its factorization.

4000018312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824340 (or 824336 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 4000018312 is about 63245.6979722732. The cubic root of 4000018312 is about 1587.4034743385.

Adding to 4000018312 its reverse (2138100004), we get a palindrome (6138118316).

The spelling of 4000018312 in words is "four billion, eighteen thousand, three hundred twelve".