4721143018 has 4 divisors (see below), whose sum is σ = 7081714530. Its totient is φ = 2360571508.

The previous prime is 4721143013. The next prime is 4721143027. The reversal of 4721143018 is 8103411274.

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., 4424511289 + 296631729 = 66517^2 + 17223^2 .

It is not an unprimeable number, because it can be changed into a prime (4721143013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1180285753 + ... + 1180285756.

Almost surely, 2^4721143018 is an apocalyptic number.

4721143018 is a deficient number, since it is larger than the sum of its proper divisors (2360571512).

4721143018 is a wasteful number, since it uses less digits than its factorization.

4721143018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360571511.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 4721143018 is about 68710.5742808194. The cubic root of 4721143018 is about 1677.5767001399.

The spelling of 4721143018 in words is "four billion, seven hundred twenty-one million, one hundred forty-three thousand, eighteen".