18138110 has 16 divisors (see below), whose sum is σ = 32886000. Its totient is φ = 7202496.

The previous prime is 18138101. The next prime is 18138119. The reversal of 18138110 is 1183181.

It is an interprime number because it is at equal distance from previous prime (18138101) and next prime (18138119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18138119) 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, 5135 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (2055375).

Almost surely, 2^18138110 is an apocalyptic number.

18138110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18138110 is a deficient number, since it is larger than the sum of its proper divisors (14747890).

18138110 is a wasteful number, since it uses less digits than its factorization.

18138110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13195.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 18138110 is about 4258.8860045791. The cubic root of 18138110 is about 262.7427112686.

The spelling of 18138110 in words is "eighteen million, one hundred thirty-eight thousand, one hundred ten".