1800173229432 has 16 divisors (see below), whose sum is σ = 4500433073640. Its totient is φ = 600057743136.

The previous prime is 1800173229383. The next prime is 1800173229479. The reversal of 1800173229432 is 2349223710081.

It is a super-2 number, since 2×1800173229432² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37503608923 + ... + 37503608970.

Almost surely, 2^{1800173229432} is an apocalyptic number.

1800173229432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1800173229432 is an abundant number, since it is smaller than the sum of its proper divisors (2700259844208).

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

1800173229432 is a wasteful number, since it uses less digits than its factorization.

1800173229432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75007217902 (or 75007217898 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 1800173229432 in words is "one trillion, eight hundred billion, one hundred seventy-three million, two hundred twenty-nine thousand, four hundred thirty-two".