1939122318 has 64 divisors (see below), whose sum is σ = 4631657472. Its totient is φ = 529182720.

The previous prime is 1939122313. The next prime is 1939122359. The reversal of 1939122318 is 8132219391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939122313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1112928 + ... + 1114668.

It is an arithmetic number, because the mean of its divisors is an integer number (72369648).

Almost surely, 2^1939122318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939122318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2315828736).

1939122318 is an abundant number, since it is smaller than the sum of its proper divisors (2692535154).

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

1939122318 is a wasteful number, since it uses less digits than its factorization.

1939122318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its digits is 23328, while the sum is 39.

The square root of 1939122318 is about 44035.4665922822. The cubic root of 1939122318 is about 1247.0055937260.

The spelling of 1939122318 in words is "one billion, nine hundred thirty-nine million, one hundred twenty-two thousand, three hundred eighteen".