30047445418 has 4 divisors (see below), whose sum is σ = 45071168130. Its totient is φ = 15023722708.

The previous prime is 30047445397. The next prime is 30047445437. The reversal of 30047445418 is 81454474003.

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., 29968110769 + 79334649 = 173113^2 + 8907^2 .

It is a super-2 number, since 2×30047445418² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7511861353 + ... + 7511861356.

Almost surely, 2^30047445418 is an apocalyptic number.

30047445418 is a deficient number, since it is larger than the sum of its proper divisors (15023722712).

30047445418 is a wasteful number, since it uses less digits than its factorization.

30047445418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15023722711.

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 30047445418 in words is "thirty billion, forty-seven million, four hundred forty-five thousand, four hundred eighteen".