1939909159 has 8 divisors (see below), whose sum is σ = 1959710480. Its totient is φ = 1920191616.

The previous prime is 1939909133. The next prime is 1939909163. The reversal of 1939909159 is 9519099391.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1939909159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939909259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26137 + ... + 67549.

It is an arithmetic number, because the mean of its divisors is an integer number (244963810).

Almost surely, 2^1939909159 is an apocalyptic number.

1939909159 is a deficient number, since it is larger than the sum of its proper divisors (19801321).

1939909159 is a wasteful number, since it uses less digits than its factorization.

1939909159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41889.

The product of its (nonzero) digits is 885735, while the sum is 55.

The square root of 1939909159 is about 44044.3998596870. The cubic root of 1939909159 is about 1247.1742374530.

The spelling of 1939909159 in words is "one billion, nine hundred thirty-nine million, nine hundred nine thousand, one hundred fifty-nine".