1809998344080 has 120 divisors (see below), whose sum is σ = 6079485167808. Its totient is φ = 482594174208.

The previous prime is 1809998344051. The next prime is 1809998344103. The reversal of 1809998344080 is 804438999081.

1809998344080 is a `hidden beast` number, since 18 + 0 + 99 + 98 + 3 + 440 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 1809998343999 and 1809998344017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4728339 + ... + 5096781.

Almost surely, 2^{1809998344080} is an apocalyptic number.

1809998344080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1809998344080 is an abundant number, since it is smaller than the sum of its proper divisors (4269486823728).

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

1809998344080 is a wasteful number, since it uses less digits than its factorization.

1809998344080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375285 (or 375276 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 1809998344080 in words is "one trillion, eight hundred nine billion, nine hundred ninety-eight million, three hundred forty-four thousand, eighty".