18147079843 has 2 divisors, whose sum is σ = 18147079844. Its totient is φ = 18147079842.

The previous prime is 18147079813. The next prime is 18147079861. The reversal of 18147079843 is 34897074181.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18147079843 is a prime.

It is not a weakly prime, because it can be changed into another prime (18147079813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9073539921 + 9073539922.

It is an arithmetic number, because the mean of its divisors is an integer number (9073539922).

Almost surely, 2^18147079843 is an apocalyptic number.

18147079843 is a deficient number, since it is larger than the sum of its proper divisors (1).

18147079843 is an equidigital number, since it uses as much as digits as its factorization.

18147079843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 18147079843 in words is "eighteen billion, one hundred forty-seven million, seventy-nine thousand, eight hundred forty-three".