18477343 has 2 divisors, whose sum is σ = 18477344. Its totient is φ = 18477342.

The previous prime is 18477313. The next prime is 18477359. The reversal of 18477343 is 34377481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18477343 - 2⁵ = 18477311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18477313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238671 + 9238672.

It is an arithmetic number, because the mean of its divisors is an integer number (9238672).

Almost surely, 2^18477343 is an apocalyptic number.

18477343 is a deficient number, since it is larger than the sum of its proper divisors (1).

18477343 is an equidigital number, since it uses as much as digits as its factorization.

18477343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 18477343 is about 4298.5280038636. The cubic root of 18477343 is about 264.3706102996.

The spelling of 18477343 in words is "eighteen million, four hundred seventy-seven thousand, three hundred forty-three".