1800550004 has 24 divisors (see below), whose sum is σ = 3470795328. Its totient is φ = 810483840.

The previous prime is 1800550001. The next prime is 1800550013. The reversal of 1800550004 is 4000550081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800550001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194117 + ... + 203180.

It is an arithmetic number, because the mean of its divisors is an integer number (144616472).

Almost surely, 2^1800550004 is an apocalyptic number.

It is an amenable number.

1800550004 is a deficient number, since it is larger than the sum of its proper divisors (1670245324).

1800550004 is a wasteful number, since it uses less digits than its factorization.

1800550004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397415 (or 397413 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1800550004 is about 42432.8882354242. Note that the first 3 decimals coincide. The cubic root of 1800550004 is about 1216.5642841059.

The spelling of 1800550004 in words is "one billion, eight hundred million, five hundred fifty thousand, four".