1938161112 has 16 divisors (see below), whose sum is σ = 4845402840. Its totient is φ = 646053696.

The previous prime is 1938161111. The next prime is 1938161123. The reversal of 1938161112 is 2111618391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938161111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40378333 + ... + 40378380.

Almost surely, 2^1938161112 is an apocalyptic number.

1938161112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1938161112 is an abundant number, since it is smaller than the sum of its proper divisors (2907241728).

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

1938161112 is a wasteful number, since it uses less digits than its factorization.

1938161112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80756722 (or 80756718 counting only the distinct ones).

The product of its digits is 2592, while the sum is 33.

The square root of 1938161112 is about 44024.5512413244. The cubic root of 1938161112 is about 1246.7995164108.

The spelling of 1938161112 in words is "one billion, nine hundred thirty-eight million, one hundred sixty-one thousand, one hundred twelve".