18140030 has 8 divisors (see below), whose sum is σ = 32652072. Its totient is φ = 7256008.

The previous prime is 18140011. The next prime is 18140047. The reversal of 18140030 is 3004181.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 18139990 and 18140008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906992 + ... + 907011.

It is an arithmetic number, because the mean of its divisors is an integer number (4081509).

Almost surely, 2^18140030 is an apocalyptic number.

18140030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18140030 is a deficient number, since it is larger than the sum of its proper divisors (14512042).

18140030 is a wasteful number, since it uses less digits than its factorization.

18140030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814010.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 18140030 is about 4259.1114096722. Note that the first 3 decimals coincide. The cubic root of 18140030 is about 262.7519817715.

The spelling of 18140030 in words is "eighteen million, one hundred forty thousand, thirty".