1018090 has 16 divisors (see below), whose sum is σ = 1863720. Its totient is φ = 400320.

The previous prime is 1018057. The next prime is 1018091. The reversal of 1018090 is 908101.

It can be written as a sum of positive squares in 4 ways, for example, as 546121 + 471969 = 739^2 + 687^2 .

It is not an unprimeable number, because it can be changed into a prime (1018091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225 + ... + 1444.

2^1018090 is an apocalyptic number.

1018090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1018090 is a deficient number, since it is larger than the sum of its proper divisors (845630).

1018090 is a wasteful number, since it uses less digits than its factorization.

1018090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737.

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

The square root of 1018090 is about 1009.0044598514. The cubic root of 1018090 is about 100.5994000178.

The spelling of 1018090 in words is "one million, eighteen thousand, ninety".