18532071 has 20 divisors (see below), whose sum is σ = 27951000. Its totient is φ = 12235536.

The previous prime is 18532067. The next prime is 18532081. The reversal of 18532071 is 17023581.

It is not a de Polignac number, because 18532071 - 2² = 18532067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18532051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7780 + ... + 9878.

It is an arithmetic number, because the mean of its divisors is an integer number (1397550).

Almost surely, 2^18532071 is an apocalyptic number.

18532071 is a deficient number, since it is larger than the sum of its proper divisors (9418929).

18532071 is a wasteful number, since it uses less digits than its factorization.

18532071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 18532071 is about 4304.8891971803. The cubic root of 18532071 is about 264.6313659271.

The spelling of 18532071 in words is "eighteen million, five hundred thirty-two thousand, seventy-one".