3891122112 has 112 divisors (see below), whose sum is σ = 11001877920. Its totient is φ = 1209434112.

The previous prime is 3891122101. The next prime is 3891122143. The reversal of 3891122112 is 2112211983.

It is a self number, because there is not a number n which added to its sum of digits gives 3891122112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350308 + ... + 361244.

Almost surely, 2^3891122112 is an apocalyptic number.

3891122112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3891122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5500938960).

3891122112 is an abundant number, since it is smaller than the sum of its proper divisors (7110755808).

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

3891122112 is a wasteful number, since it uses less digits than its factorization.

3891122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11078 (or 11068 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 3891122112 is about 62378.8594958260. The cubic root of 3891122112 is about 1572.8656214525.

The spelling of 3891122112 in words is "three billion, eight hundred ninety-one million, one hundred twenty-two thousand, one hundred twelve".