1939193409 has 8 divisors (see below), whose sum is σ = 2721675040. Its totient is φ = 1224753696.

The previous prime is 1939193381. The next prime is 1939193413. The reversal of 1939193409 is 9043919391.

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

It is not a de Polignac number, because 1939193409 - 2²⁹ = 1402322497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1939193209) 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, 17010412 + ... + 17010525.

It is an arithmetic number, because the mean of its divisors is an integer number (340209380).

Almost surely, 2^1939193409 is an apocalyptic number.

1939193409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1939193409 is a deficient number, since it is larger than the sum of its proper divisors (782481631).

1939193409 is a wasteful number, since it uses less digits than its factorization.

1939193409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34020959.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 1939193409 is about 44036.2737865047. The cubic root of 1939193409 is about 1247.0208325432.

The spelling of 1939193409 in words is "one billion, nine hundred thirty-nine million, one hundred ninety-three thousand, four hundred nine".