1801026 has 12 divisors (see below), whose sum is σ = 3902262. Its totient is φ = 600336.

The previous prime is 1801021. The next prime is 1801039. The reversal of 1801026 is 6201081.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 251001 = 1245^2 + 501^2 .

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 100057 = 1801026 / (1 + 8 + 0 + 1 + 0 + 2 + 6).

It is not an unprimeable number, because it can be changed into a prime (1801021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50011 + ... + 50046.

2^1801026 is an apocalyptic number.

1801026 is an abundant number, since it is smaller than the sum of its proper divisors (2101236).

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

1801026 is a wasteful number, since it uses less digits than its factorization.

1801026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100065 (or 100062 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1801026 is about 1342.0230996522. The cubic root of 1801026 is about 121.6671478891.

The spelling of 1801026 in words is "one million, eight hundred one thousand, twenty-six".