1940968913 has 8 divisors (see below), whose sum is σ = 2104305000. Its totient is φ = 1779637248.

The previous prime is 1940968901. The next prime is 1940968973. The reversal of 1940968913 is 3198690491.

It can be written as a sum of positive squares in 4 ways, for example, as 25331089 + 1915637824 = 5033^2 + 43768^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1940968913 - 2⁸ = 1940968657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940968973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499088 + ... + 502961.

It is an arithmetic number, because the mean of its divisors is an integer number (263038125).

Almost surely, 2^1940968913 is an apocalyptic number.

1940968913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1940968913 is a deficient number, since it is larger than the sum of its proper divisors (163336087).

1940968913 is a wasteful number, since it uses less digits than its factorization.

1940968913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002211.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1940968913 is about 44056.4287363377. The cubic root of 1940968913 is about 1247.4013026014.

The spelling of 1940968913 in words is "one billion, nine hundred forty million, nine hundred sixty-eight thousand, nine hundred thirteen".