18070471 has 4 divisors (see below), whose sum is σ = 18273600. Its totient is φ = 17867344.

The previous prime is 18070411. The next prime is 18070477. The reversal of 18070471 is 17407081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17407081 = 107 ⋅162683.

It is a cyclic number.

It is not a de Polignac number, because 18070471 - 2¹⁹ = 17546183 is a prime.

It is a super-3 number, since 3×18070471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18070477) 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, 101431 + ... + 101608.

It is an arithmetic number, because the mean of its divisors is an integer number (4568400).

Almost surely, 2^18070471 is an apocalyptic number.

18070471 is a deficient number, since it is larger than the sum of its proper divisors (203129).

18070471 is an equidigital number, since it uses as much as digits as its factorization.

18070471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203128.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 18070471 is about 4250.9376612696. The cubic root of 18070471 is about 262.4157056628.

The spelling of 18070471 in words is "eighteen million, seventy thousand, four hundred seventy-one".