1939426317 has 24 divisors (see below), whose sum is σ = 2979535104. Its totient is φ = 1211416704.

The previous prime is 1939426289. The next prime is 1939426319. The reversal of 1939426317 is 7136249391.

1939426317 is a `hidden beast` number, since 1 + 9 + 3 + 9 + 4 + 2 + 631 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1939426317 is a prime.

It is a super-2 number, since 2×1939426317² = 7522748878144368978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939426319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5698 + ... + 62540.

It is an arithmetic number, because the mean of its divisors is an integer number (124147296).

Almost surely, 2^1939426317 is an apocalyptic number.

1939426317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1939426317 is a deficient number, since it is larger than the sum of its proper divisors (1040108787).

1939426317 is a wasteful number, since it uses less digits than its factorization.

1939426317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57089 (or 57086 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 1939426317 is about 44038.9182087844. The cubic root of 1939426317 is about 1247.0707552756.

The spelling of 1939426317 in words is "one billion, nine hundred thirty-nine million, four hundred twenty-six thousand, three hundred seventeen".