18114550 has 12 divisors (see below), whose sum is σ = 33693156. Its totient is φ = 7245800.

The previous prime is 18114533. The next prime is 18114559. The reversal of 18114550 is 5541181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18114559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181096 + ... + 181195.

It is an arithmetic number, because the mean of its divisors is an integer number (2807763).

Almost surely, 2^18114550 is an apocalyptic number.

18114550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18114550 is a deficient number, since it is larger than the sum of its proper divisors (15578606).

18114550 is a wasteful number, since it uses less digits than its factorization.

18114550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362303 (or 362298 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 18114550 is about 4256.1191242727. The cubic root of 18114550 is about 262.6289011671.

The spelling of 18114550 in words is "eighteen million, one hundred fourteen thousand, five hundred fifty".