1940889608 has 48 divisors (see below), whose sum is σ = 4239144720. Its totient is φ = 830665248.

The previous prime is 1940889563. The next prime is 1940889623. The reversal of 1940889608 is 8069880491.

It is a self number, because there is not a number n which added to its sum of digits gives 1940889608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321191 + ... + 327177.

It is an arithmetic number, because the mean of its divisors is an integer number (88315515).

Almost surely, 2^1940889608 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 1940889608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2119572360).

1940889608 is an abundant number, since it is smaller than the sum of its proper divisors (2298255112).

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

1940889608 is a wasteful number, since it uses less digits than its factorization.

1940889608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834 (or 6823 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 1940889608 is about 44055.5286882362. The cubic root of 1940889608 is about 1247.3843134047.

The spelling of 1940889608 in words is "one billion, nine hundred forty million, eight hundred eighty-nine thousand, six hundred eight".