1939911168 has 80 divisors (see below), whose sum is σ = 5565643776. Its totient is φ = 596889600.

The previous prime is 1939911161. The next prime is 1939911179. The reversal of 1939911168 is 8611199391.

It is a happy number.

It is a super-2 number, since 2×1939911168² = 7526510679462248448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1939911161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28608 + ... + 68543.

Almost surely, 2^1939911168 is an apocalyptic number.

It is an amenable number.

1939911168 is an abundant number, since it is smaller than the sum of its proper divisors (3625732608).

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

1939911168 is an equidigital number, since it uses as much as digits as its factorization.

1939911168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97185 (or 97169 counting only the distinct ones).

The product of its digits is 104976, while the sum is 48.

The square root of 1939911168 is about 44044.4226662128. The cubic root of 1939911168 is about 1247.1746679839.

The spelling of 1939911168 in words is "one billion, nine hundred thirty-nine million, nine hundred eleven thousand, one hundred sixty-eight".