18148158 has 64 divisors (see below), whose sum is σ = 47255040. Its totient is φ = 5054400.

The previous prime is 18148153. The next prime is 18148159. The reversal of 18148158 is 85184181.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18148153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14913 + ... + 16083.

It is an arithmetic number, because the mean of its divisors is an integer number (738360).

Almost surely, 2^18148158 is an apocalyptic number.

18148158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18148158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23627520).

18148158 is an abundant number, since it is smaller than the sum of its proper divisors (29106882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18148158 is a wasteful number, since it uses less digits than its factorization.

18148158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1224 counting only the distinct ones).

The product of its digits is 10240, while the sum is 36.

The square root of 18148158 is about 4260.0654924543. The cubic root of 18148158 is about 262.7912196562.

The spelling of 18148158 in words is "eighteen million, one hundred forty-eight thousand, one hundred fifty-eight".