1801036 has 6 divisors (see below), whose sum is σ = 3151820. Its totient is φ = 900516.

The previous prime is 1801021. The next prime is 1801039. The reversal of 1801036 is 6301081.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1801039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225126 + ... + 225133.

2^1801036 is an apocalyptic number.

It is an amenable number.

1801036 is a deficient number, since it is larger than the sum of its proper divisors (1350784).

1801036 is a wasteful number, since it uses less digits than its factorization.

1801036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450263 (or 450261 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1801036 is about 1342.0268253653. The cubic root of 1801036 is about 121.6673730699.

The spelling of 1801036 in words is "one million, eight hundred one thousand, thirty-six".