1788641040 has 80 divisors (see below), whose sum is σ = 5550323328. Its totient is φ = 476494848.

The previous prime is 1788641039. The next prime is 1788641051. The reversal of 1788641040 is 401468871.

1788641040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1788641040.

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, 283197 + ... + 289443.

Almost surely, 2^1788641040 is an apocalyptic number.

1788641040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1788641040 is an abundant number, since it is smaller than the sum of its proper divisors (3761682288).

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

1788641040 is a wasteful number, since it uses less digits than its factorization.

1788641040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456 (or 7450 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1788641040 is about 42292.3283823438. The cubic root of 1788641040 is about 1213.8762018137.

The spelling of 1788641040 in words is "one billion, seven hundred eighty-eight million, six hundred forty-one thousand, forty".