1788004044 has 120 divisors (see below), whose sum is σ = 4961116160. Its totient is φ = 559941984.

The previous prime is 1788004003. The next prime is 1788004067. The reversal of 1788004044 is 4404008871.

It is a happy number.

1788004044 is a `hidden beast` number, since 178 + 80 + 0 + 404 + 4 = 666.

It is a super-2 number, since 2×1788004044² = 6393916922720707872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 780669 + ... + 782955.

Almost surely, 2^1788004044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1788004044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480558080).

1788004044 is an abundant number, since it is smaller than the sum of its proper divisors (3173112116).

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

1788004044 is a wasteful number, since it uses less digits than its factorization.

1788004044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1788004044 is about 42284.7968423640. The cubic root of 1788004044 is about 1213.7320838162.

The spelling of 1788004044 in words is "one billion, seven hundred eighty-eight million, four thousand, forty-four".