18071130547 has 2 divisors, whose sum is σ = 18071130548. Its totient is φ = 18071130546.

The previous prime is 18071130541. The next prime is 18071130551. The reversal of 18071130547 is 74503117081.

It is a strong prime.

It is an emirp because it is prime and its reverse (74503117081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18071130547 is a prime.

It is not a weakly prime, because it can be changed into another prime (18071130541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035565273 + 9035565274.

It is an arithmetic number, because the mean of its divisors is an integer number (9035565274).

Almost surely, 2^18071130547 is an apocalyptic number.

18071130547 is a deficient number, since it is larger than the sum of its proper divisors (1).

18071130547 is an equidigital number, since it uses as much as digits as its factorization.

18071130547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 18071130547 in words is "eighteen billion, seventy-one million, one hundred thirty thousand, five hundred forty-seven".