18649414 has 32 divisors (see below), whose sum is σ = 33417216. Its totient is φ = 7637760.

The previous prime is 18649403. The next prime is 18649429. The reversal of 18649414 is 41494681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41877 + ... + 42319.

It is an arithmetic number, because the mean of its divisors is an integer number (1044288).

Almost surely, 2^18649414 is an apocalyptic number.

18649414 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18649414 is a deficient number, since it is larger than the sum of its proper divisors (14767802).

18649414 is a wasteful number, since it uses less digits than its factorization.

18649414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its digits is 27648, while the sum is 37.

The square root of 18649414 is about 4318.4967291871. The cubic root of 18649414 is about 265.1887299214.

The spelling of 18649414 in words is "eighteen million, six hundred forty-nine thousand, four hundred fourteen".