18010146 has 48 divisors (see below), whose sum is σ = 45718560. Its totient is φ = 4677120.

The previous prime is 18010121. The next prime is 18010147. The reversal of 18010146 is 64101081.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (18010147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 450 + ... + 6018.

It is an arithmetic number, because the mean of its divisors is an integer number (952470).

Almost surely, 2^18010146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18010146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22859280).

18010146 is an abundant number, since it is smaller than the sum of its proper divisors (27708414).

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

18010146 is a wasteful number, since it uses less digits than its factorization.

18010146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599 (or 5592 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 18010146 is about 4243.8362362372. The cubic root of 18010146 is about 262.1233709908.

The spelling of 18010146 in words is "eighteen million, ten thousand, one hundred forty-six".