18146147 has 2 divisors, whose sum is σ = 18146148. Its totient is φ = 18146146.

The previous prime is 18146101. The next prime is 18146173. The reversal of 18146147 is 74164181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18146147 - 2⁸ = 18145891 is a prime.

It is not a weakly prime, because it can be changed into another prime (18145147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9073073 + 9073074.

It is an arithmetic number, because the mean of its divisors is an integer number (9073074).

Almost surely, 2^18146147 is an apocalyptic number.

18146147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18146147 is an equidigital number, since it uses as much as digits as its factorization.

18146147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 18146147 is about 4259.8294566802. The cubic root of 18146147 is about 262.7815126533.

The spelling of 18146147 in words is "eighteen million, one hundred forty-six thousand, one hundred forty-seven".