18622149 has 16 divisors (see below), whose sum is σ = 30559872. Its totient is φ = 9822528.

The previous prime is 18622127. The next prime is 18622171. The reversal of 18622149 is 94122681.

It is an interprime number because it is at equal distance from previous prime (18622127) and next prime (18622171).

It is not a de Polignac number, because 18622149 - 2⁹ = 18621637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18622349) 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 in 15 ways as a sum of consecutive naturals, for example, 33834 + ... + 34379.

It is an arithmetic number, because the mean of its divisors is an integer number (1909992).

Almost surely, 2^18622149 is an apocalyptic number.

It is an amenable number.

18622149 is a deficient number, since it is larger than the sum of its proper divisors (11937723).

18622149 is a wasteful number, since it uses less digits than its factorization.

18622149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68236.

The product of its digits is 6912, while the sum is 33.

The square root of 18622149 is about 4315.3388047754. The cubic root of 18622149 is about 265.0594336849.

The spelling of 18622149 in words is "eighteen million, six hundred twenty-two thousand, one hundred forty-nine".