18293147 has 2 divisors, whose sum is σ = 18293148. Its totient is φ = 18293146.

The previous prime is 18293141. The next prime is 18293153. The reversal of 18293147 is 74139281.

It is a balanced prime because it is at equal distance from previous prime (18293141) and next prime (18293153).

It is a cyclic number.

It is not a de Polignac number, because 18293147 - 2⁶ = 18293083 is a prime.

It is equal to p_1168856 and since 18293147 and 1168856 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (18293141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9146573 + 9146574.

It is an arithmetic number, because the mean of its divisors is an integer number (9146574).

Almost surely, 2^18293147 is an apocalyptic number.

18293147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18293147 is an equidigital number, since it uses as much as digits as its factorization.

18293147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 18293147 is about 4277.0488657484. The cubic root of 18293147 is about 263.4891934593.

The spelling of 18293147 in words is "eighteen million, two hundred ninety-three thousand, one hundred forty-seven".