1801008 has 80 divisors (see below), whose sum is σ = 5654400. Its totient is φ = 544320.

The previous prime is 1801003. The next prime is 1801013. The reversal of 1801008 is 8001081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1801003) and next prime (1801013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1801003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4563 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2^1801008 is an apocalyptic number.

1801008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827200).

1801008 is an abundant number, since it is smaller than the sum of its proper divisors (3853392).

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

1801008 is a wasteful number, since it uses less digits than its factorization.

1801008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1801008 is about 1342.0163933425. The cubic root of 1801008 is about 121.6667425616. Note that the first 3 decimals are identical.

Adding to 1801008 its reverse (8001081), we get a palindrome (9802089).

The spelling of 1801008 in words is "one million, eight hundred one thousand, eight".