1940388580 has 48 divisors (see below), whose sum is σ = 4529839104. Its totient is φ = 693336960.

The previous prime is 1940388559. The next prime is 1940388641. The reversal of 1940388580 is 858830491.

It is a self number, because there is not a number n which added to its sum of digits gives 1940388580.

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, 112312 + ... + 128431.

It is an arithmetic number, because the mean of its divisors is an integer number (94371648).

Almost surely, 2^1940388580 is an apocalyptic number.

1940388580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940388580 is an abundant number, since it is smaller than the sum of its proper divisors (2589450524).

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

1940388580 is a wasteful number, since it uses less digits than its factorization.

1940388580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240796 (or 240794 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 1940388580 is about 44049.8419974465. The cubic root of 1940388580 is about 1247.2769694578.

The spelling of 1940388580 in words is "one billion, nine hundred forty million, three hundred eighty-eight thousand, five hundred eighty".