18157050 has 72 divisors (see below), whose sum is σ = 49283676. Its totient is φ = 4792320.

The previous prime is 18157039. The next prime is 18157057. The reversal of 18157050 is 5075181.

It can be written as a sum of positive squares in 6 ways, for example, as 10556001 + 7601049 = 3249^2 + 2757^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18157057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70522 + ... + 70778.

Almost surely, 2^18157050 is an apocalyptic number.

18157050 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 18157050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24641838).

18157050 is an abundant number, since it is smaller than the sum of its proper divisors (31126626).

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

18157050 is a wasteful number, since it uses less digits than its factorization.

18157050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 18157050 is about 4261.1090105746. The cubic root of 18157050 is about 262.8341323306.

The spelling of 18157050 in words is "eighteen million, one hundred fifty-seven thousand, fifty".