18959149 has 8 divisors (see below), whose sum is σ = 20744640. Its totient is φ = 17184000.

The previous prime is 18959137. The next prime is 18959167. The reversal of 18959149 is 94195981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18959149 - 2⁵ = 18959117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18959099 and 18959108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953149) 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 7 ways as a sum of consecutive naturals, for example, 1549 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (2593080).

Almost surely, 2^18959149 is an apocalyptic number.

It is an amenable number.

18959149 is a deficient number, since it is larger than the sum of its proper divisors (1785491).

18959149 is a wasteful number, since it uses less digits than its factorization.

18959149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

The product of its digits is 116640, while the sum is 46.

The square root of 18959149 is about 4354.2104910075. The cubic root of 18959149 is about 266.6487875166.

The spelling of 18959149 in words is "eighteen million, nine hundred fifty-nine thousand, one hundred forty-nine".