18077850 has 96 divisors (see below), whose sum is σ = 56960640. Its totient is φ = 4129920.

The previous prime is 18077849. The next prime is 18077861. The reversal of 18077850 is 5877081.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8494 + ... + 10406.

It is an arithmetic number, because the mean of its divisors is an integer number (593340).

Almost surely, 2^18077850 is an apocalyptic number.

18077850 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 18077850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28480320).

18077850 is an abundant number, since it is smaller than the sum of its proper divisors (38882790).

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

18077850 is a wasteful number, since it uses less digits than its factorization.

18077850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 18077850 is about 4251.8054988440. The cubic root of 18077850 is about 262.4514195813.

The spelling of 18077850 in words is "eighteen million, seventy-seven thousand, eight hundred fifty".