1897268112 has 120 divisors (see below), whose sum is σ = 5468587488. Its totient is φ = 613670400.

The previous prime is 1897268111. The next prime is 1897268117. The reversal of 1897268112 is 2118627981.

It is not an unprimeable number, because it can be changed into a prime (1897268111) 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 23 ways as a sum of consecutive naturals, for example, 1244983 + ... + 1246505.

Almost surely, 2^1897268112 is an apocalyptic number.

1897268112 is a gapful number since it is divisible by the number (12) 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 1897268112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734293744).

1897268112 is an abundant number, since it is smaller than the sum of its proper divisors (3571319376).

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

1897268112 is a wasteful number, since it uses less digits than its factorization.

1897268112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789 (or 1780 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 1897268112 is about 43557.6412584520. The cubic root of 1897268112 is about 1237.9684284800.

The spelling of 1897268112 in words is "one billion, eight hundred ninety-seven million, two hundred sixty-eight thousand, one hundred twelve".