18370147 has 2 divisors, whose sum is σ = 18370148. Its totient is φ = 18370146.

The previous prime is 18370133. The next prime is 18370201. The reversal of 18370147 is 74107381.

It is a weak prime.

It is an emirp because it is prime and its reverse (74107381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18370147 - 2¹⁹ = 17845859 is a prime.

It is not a weakly prime, because it can be changed into another prime (18370117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9185073 + 9185074.

It is an arithmetic number, because the mean of its divisors is an integer number (9185074).

Almost surely, 2^18370147 is an apocalyptic number.

18370147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18370147 is an equidigital number, since it uses as much as digits as its factorization.

18370147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 18370147 is about 4286.0409470746. The cubic root of 18370147 is about 263.8583711946.

The spelling of 18370147 in words is "eighteen million, three hundred seventy thousand, one hundred forty-seven".