1940535920 has 20 divisors (see below), whose sum is σ = 4511746200. Its totient is φ = 776214336.

The previous prime is 1940535893. The next prime is 1940535937. The reversal of 1940535920 is 295350491.

It is a tau number, because it is divible by the number of its divisors (20).

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, 12128270 + ... + 12128429.

It is an arithmetic number, because the mean of its divisors is an integer number (225587310).

Almost surely, 2^1940535920 is an apocalyptic number.

1940535920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940535920 is an abundant number, since it is smaller than the sum of its proper divisors (2571210280).

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

1940535920 is a wasteful number, since it uses less digits than its factorization.

1940535920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24256712 (or 24256706 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1940535920 is about 44051.5143894055. The cubic root of 1940535920 is about 1247.3085385877.

The spelling of 1940535920 in words is "one billion, nine hundred forty million, five hundred thirty-five thousand, nine hundred twenty".