18472471 has 2 divisors, whose sum is σ = 18472472. Its totient is φ = 18472470.

The previous prime is 18472469. The next prime is 18472477. The reversal of 18472471 is 17427481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18472471 - 2¹ = 18472469 is a prime.

It is a super-3 number, since 3×18472471³ (a number of 23 digits) contains 333 as substring.

Together with 18472469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18472477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236235 + 9236236.

It is an arithmetic number, because the mean of its divisors is an integer number (9236236).

Almost surely, 2^18472471 is an apocalyptic number.

18472471 is a deficient number, since it is larger than the sum of its proper divisors (1).

18472471 is an equidigital number, since it uses as much as digits as its factorization.

18472471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 34.

The square root of 18472471 is about 4297.9612608771. The cubic root of 18472471 is about 264.3473723475.

The spelling of 18472471 in words is "eighteen million, four hundred seventy-two thousand, four hundred seventy-one".