18050643 has 12 divisors (see below), whose sum is σ = 28078960. Its totient is φ = 11108016.

The previous prime is 18050639. The next prime is 18050657. The reversal of 18050643 is 34605081.

18050643 is a `hidden beast` number, since 18 + 0 + 5 + 0 + 643 = 666.

It is not a de Polignac number, because 18050643 - 2² = 18050639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18050603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77023 + ... + 77256.

Almost surely, 2^18050643 is an apocalyptic number.

18050643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18050643 is a deficient number, since it is larger than the sum of its proper divisors (10028317).

18050643 is a wasteful number, since it uses less digits than its factorization.

18050643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154298 (or 154295 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 18050643 is about 4248.6048298236. The cubic root of 18050643 is about 262.3196911418.

The spelling of 18050643 in words is "eighteen million, fifty thousand, six hundred forty-three".