1118490 has 32 divisors (see below), whose sum is σ = 2802816. Its totient is φ = 285120.

The previous prime is 1118483. The next prime is 1118497. The reversal of 1118490 is 948111.

It is an interprime number because it is at equal distance from previous prime (1118483) and next prime (1118497).

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1118490.

It is not an unprimeable number, because it can be changed into a prime (1118497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (87588).

2^1118490 is an apocalyptic number.

1118490 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 1118490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401408).

1118490 is an abundant number, since it is smaller than the sum of its proper divisors (1684326).

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

1118490 is a wasteful number, since it uses less digits than its factorization.

1118490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 1118490 is about 1057.5868758641. The cubic root of 1118490 is about 103.8031904158.

The spelling of 1118490 in words is "one million, one hundred eighteen thousand, four hundred ninety".