18070071 has 4 divisors (see below), whose sum is σ = 24093432. Its totient is φ = 12046712.

The previous prime is 18070069. The next prime is 18070081. The reversal of 18070071 is 17007081.

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 18070071 - 2¹ = 18070069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18070001) 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, 3011676 + ... + 3011681.

It is an arithmetic number, because the mean of its divisors is an integer number (6023358).

Almost surely, 2^18070071 is an apocalyptic number.

18070071 is a deficient number, since it is larger than the sum of its proper divisors (6023361).

18070071 is an equidigital number, since it uses as much as digits as its factorization.

18070071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023360.

The product of its (nonzero) digits is 392, while the sum is 24.

The square root of 18070071 is about 4250.8906125658. The cubic root of 18070071 is about 262.4137694090.

The spelling of 18070071 in words is "eighteen million, seventy thousand, seventy-one".