18486249 has 8 divisors (see below), whose sum is σ = 24733632. Its totient is φ = 12281520.

The previous prime is 18486197. The next prime is 18486263. The reversal of 18486249 is 94268481.

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

It is not a de Polignac number, because 18486249 - 2¹² = 18482153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18486249.

It is not an unprimeable number, because it can be changed into a prime (18486269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9637 + ... + 11394.

It is an arithmetic number, because the mean of its divisors is an integer number (3091704).

Almost surely, 2^18486249 is an apocalyptic number.

It is an amenable number.

18486249 is a deficient number, since it is larger than the sum of its proper divisors (6247383).

18486249 is a wasteful number, since it uses less digits than its factorization.

18486249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21327.

The product of its digits is 110592, while the sum is 42.

The square root of 18486249 is about 4299.5638150864. The cubic root of 18486249 is about 264.4130786435.

The spelling of 18486249 in words is "eighteen million, four hundred eighty-six thousand, two hundred forty-nine".