1018900 has 36 divisors (see below), whose sum is σ = 2312352. Its totient is φ = 388960.

The previous prime is 1018889. The next prime is 1018903. The reversal of 1018900 is 98101.

It is a super-3 number, since 3×1018900³ = 3173335143807000000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2079 + ... + 2521.

It is an arithmetic number, because the mean of its divisors is an integer number (64232).

2^1018900 is an apocalyptic number.

1018900 is a gapful number since it is divisible by the number (10) 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 1018900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156176).

1018900 is an abundant number, since it is smaller than the sum of its proper divisors (1293452).

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

1018900 is a wasteful number, since it uses less digits than its factorization.

1018900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1018900 is about 1009.4057657850. The cubic root of 1018900 is about 100.6260721566.

The spelling of 1018900 in words is "one million, eighteen thousand, nine hundred".