1940199593 has 4 divisors (see below), whose sum is σ = 1941042180. Its totient is φ = 1939357008.

The previous prime is 1940199587. The next prime is 1940199619. The reversal of 1940199593 is 3959910491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 932264089 + 1007935504 = 30533^2 + 31748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940199593 - 2⁴ = 1940199577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940199533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417830 + ... + 422447.

It is an arithmetic number, because the mean of its divisors is an integer number (485260545).

Almost surely, 2^1940199593 is an apocalyptic number.

It is an amenable number.

1940199593 is a deficient number, since it is larger than the sum of its proper divisors (842587).

1940199593 is an equidigital number, since it uses as much as digits as its factorization.

1940199593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842586.

The product of its (nonzero) digits is 393660, while the sum is 50.

The square root of 1940199593 is about 44047.6967956328. The cubic root of 1940199593 is about 1247.2364746847.

The spelling of 1940199593 in words is "one billion, nine hundred forty million, one hundred ninety-nine thousand, five hundred ninety-three".