18070559 has 4 divisors (see below), whose sum is σ = 19460616. Its totient is φ = 16680504.

The previous prime is 18070553. The next prime is 18070561. The reversal of 18070559 is 95507081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18070559 - 2¹² = 18066463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18070553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695009 + ... + 695034.

It is an arithmetic number, because the mean of its divisors is an integer number (4865154).

Almost surely, 2^18070559 is an apocalyptic number.

18070559 is a deficient number, since it is larger than the sum of its proper divisors (1390057).

18070559 is a wasteful number, since it uses less digits than its factorization.

18070559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390056.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 18070559 is about 4250.9480119145. The cubic root of 18070559 is about 262.4161316348.

The spelling of 18070559 in words is "eighteen million, seventy thousand, five hundred fifty-nine".