18246149 has 2 divisors, whose sum is σ = 18246150. Its totient is φ = 18246148.

The previous prime is 18246127. The next prime is 18246161. The reversal of 18246149 is 94164281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16957924 + 1288225 = 4118^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 18246149 - 2¹² = 18242053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18246169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9123074 + 9123075.

It is an arithmetic number, because the mean of its divisors is an integer number (9123075).

Almost surely, 2^18246149 is an apocalyptic number.

It is an amenable number.

18246149 is a deficient number, since it is larger than the sum of its proper divisors (1).

18246149 is an equidigital number, since it uses as much as digits as its factorization.

18246149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 18246149 is about 4271.5511234211. The cubic root of 18246149 is about 263.2633514120.

The spelling of 18246149 in words is "eighteen million, two hundred forty-six thousand, one hundred forty-nine".