1939426318 has 8 divisors (see below), whose sum is σ = 2935829160. Its totient is φ = 960816600.

The previous prime is 1939426289. The next prime is 1939426319. The reversal of 1939426318 is 8136249391.

It is a happy number.

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

It is a super-2 number, since 2×1939426318² = 7522748885902074248, 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 3 ways as a sum of consecutive naturals, for example, 4448008 + ... + 4448443.

It is an arithmetic number, because the mean of its divisors is an integer number (366978645).

Almost surely, 2^1939426318 is an apocalyptic number.

1939426318 is a deficient number, since it is larger than the sum of its proper divisors (996402842).

1939426318 is a wasteful number, since it uses less digits than its factorization.

1939426318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896562.

The product of its digits is 279936, while the sum is 46.

The square root of 1939426318 is about 44038.9182201380. The cubic root of 1939426318 is about 1247.0707554899.

The spelling of 1939426318 in words is "one billion, nine hundred thirty-nine million, four hundred twenty-six thousand, three hundred eighteen".