1940691996 has 72 divisors (see below), whose sum is σ = 5283998720. Its totient is φ = 598588704.

The previous prime is 1940691989. The next prime is 1940691997. The reversal of 1940691996 is 6991960491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940691997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3580 + ... + 62403.

Almost surely, 2^1940691996 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 1940691996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2641999360).

1940691996 is an abundant number, since it is smaller than the sum of its proper divisors (3343306724).

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

1940691996 is a wasteful number, since it uses less digits than its factorization.

1940691996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66055 (or 66050 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 1940691996 is about 44053.2858706363. The cubic root of 1940691996 is about 1247.3419777537.

The spelling of 1940691996 in words is "one billion, nine hundred forty million, six hundred ninety-one thousand, nine hundred ninety-six".