1931868852 has 48 divisors (see below), whose sum is σ = 4757544960. Its totient is φ = 608443488.

The previous prime is 1931868839. The next prime is 1931868853. The reversal of 1931868852 is 2588681391.

It is a super-2 number, since 2×1931868852² = 7464234522655595808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1931868795 and 1931868804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1931868853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76263 + ... + 98385.

It is an arithmetic number, because the mean of its divisors is an integer number (99115520).

Almost surely, 2^1931868852 is an apocalyptic number.

1931868852 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 1931868852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2378772480).

1931868852 is an abundant number, since it is smaller than the sum of its proper divisors (2825676108).

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

1931868852 is a wasteful number, since it uses less digits than its factorization.

1931868852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22532 (or 22530 counting only the distinct ones).

The product of its digits is 829440, while the sum is 51.

The square root of 1931868852 is about 43953.0300661968. The cubic root of 1931868852 is about 1245.4488045000.

The spelling of 1931868852 in words is "one billion, nine hundred thirty-one million, eight hundred sixty-eight thousand, eight hundred fifty-two".