18070069 has 2 divisors, whose sum is σ = 18070070. Its totient is φ = 18070068.

The previous prime is 18070067. The next prime is 18070081. The reversal of 18070069 is 96007081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 7569 = 4250^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 18070069 - 2¹ = 18070067 is a prime.

It is a super-2 number, since 2×18070069² = 653054787329522, which contains 22 as substring.

Together with 18070067, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18070069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18070067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035034 + 9035035.

It is an arithmetic number, because the mean of its divisors is an integer number (9035035).

Almost surely, 2^18070069 is an apocalyptic number.

It is an amenable number.

18070069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18070069 is an equidigital number, since it uses as much as digits as its factorization.

18070069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 18070069 is about 4250.8903773210. The cubic root of 18070069 is about 262.4137597277.

The spelling of 18070069 in words is "eighteen million, seventy thousand, sixty-nine".