18061350 has 36 divisors (see below), whose sum is σ = 44921604. Its totient is φ = 4802480.

The previous prime is 18061349. The next prime is 18061357. The reversal of 18061350 is 5316081.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18061350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18061357) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51877 + ... + 52223.

Almost surely, 2^18061350 is an apocalyptic number.

18061350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18061350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22460802).

18061350 is an abundant number, since it is smaller than the sum of its proper divisors (26860254).

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

18061350 is an equidigital number, since it uses as much as digits as its factorization.

18061350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 18061350 is about 4249.8647037288. The cubic root of 18061350 is about 262.3715471299.

Multiplying 18061350 by its sum of digits (24), we get a square (433472400 = 20820²).

The spelling of 18061350 in words is "eighteen million, sixty-one thousand, three hundred fifty".