30144430018 has 4 divisors (see below), whose sum is σ = 45216645030. Its totient is φ = 15072215008.

The previous prime is 30144430013. The next prime is 30144430087. The reversal of 30144430018 is 81003444103.

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., 25473117609 + 4671312409 = 159603^2 + 68347^2 .

It is a super-2 number, since 2×30144430018² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30144430013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7536107503 + ... + 7536107506.

Almost surely, 2^30144430018 is an apocalyptic number.

30144430018 is a deficient number, since it is larger than the sum of its proper divisors (15072215012).

30144430018 is a wasteful number, since it uses less digits than its factorization.

30144430018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072215011.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 30144430018 in words is "thirty billion, one hundred forty-four million, four hundred thirty thousand, eighteen".