1801473918 has 32 divisors (see below), whose sum is σ = 3844952064. Its totient is φ = 560714112.

The previous prime is 1801473853. The next prime is 1801473929. The reversal of 1801473918 is 8193741081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1801473918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56580 + ... + 82487.

It is an arithmetic number, because the mean of its divisors is an integer number (120154752).

Almost surely, 2^1801473918 is an apocalyptic number.

1801473918 is an abundant number, since it is smaller than the sum of its proper divisors (2043478146).

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

1801473918 is a wasteful number, since it uses less digits than its factorization.

1801473918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139216.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 1801473918 is about 42443.7736069733. The cubic root of 1801473918 is about 1216.7723332342.

The spelling of 1801473918 in words is "one billion, eight hundred one million, four hundred seventy-three thousand, nine hundred eighteen".