2031844640 has 96 divisors (see below), whose sum is σ = 5634365184. Its totient is φ = 677790720.

The previous prime is 2031844637. The next prime is 2031844649. The reversal of 2031844640 is 464481302.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2031844597 and 2031844606.

It is not an unprimeable number, because it can be changed into a prime (2031844649) 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, 16925 + ... + 65955.

It is an arithmetic number, because the mean of its divisors is an integer number (58691304).

Almost surely, 2^2031844640 is an apocalyptic number.

2031844640 is a gapful number since it is divisible by the number (20) 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 2031844640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2817182592).

2031844640 is an abundant number, since it is smaller than the sum of its proper divisors (3602520544).

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

2031844640 is a wasteful number, since it uses less digits than its factorization.

2031844640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49090 (or 49082 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2031844640 is about 45075.9873990576. The cubic root of 2031844640 is about 1266.5728253040.

The spelling of 2031844640 in words is "two billion, thirty-one million, eight hundred forty-four thousand, six hundred forty".