18474371 has 2 divisors, whose sum is σ = 18474372. Its totient is φ = 18474370.

The previous prime is 18474367. The next prime is 18474373. The reversal of 18474371 is 17347481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18474371 - 2² = 18474367 is a prime.

Together with 18474373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18474373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237185 + 9237186.

It is an arithmetic number, because the mean of its divisors is an integer number (9237186).

Almost surely, 2^18474371 is an apocalyptic number.

18474371 is a deficient number, since it is larger than the sum of its proper divisors (1).

18474371 is an equidigital number, since it uses as much as digits as its factorization.

18474371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 18474371 is about 4298.1822902246. The cubic root of 18474371 is about 264.3564352532.

The spelling of 18474371 in words is "eighteen million, four hundred seventy-four thousand, three hundred seventy-one".