2071189440 has 140 divisors (see below), whose sum is σ = 7367677416. Its totient is φ = 552310272.

The previous prime is 2071189429. The next prime is 2071189447. The reversal of 2071189440 is 449811702.

2071189440 is a `hidden beast` number, since 207 + 1 + 1 + 8 + 9 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2071189395 and 2071189404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071189447) 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 19 ways as a sum of consecutive naturals, for example, 14034 + ... + 65873.

Almost surely, 2^2071189440 is an apocalyptic number.

2071189440 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 2071189440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3683838708).

2071189440 is an abundant number, since it is smaller than the sum of its proper divisors (5296487976).

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

2071189440 is an equidigital number, since it uses as much as digits as its factorization.

2071189440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79936 (or 79917 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2071189440 is about 45510.3223455954. The cubic root of 2071189440 is about 1274.6959551829.

The spelling of 2071189440 in words is "two billion, seventy-one million, one hundred eighty-nine thousand, four hundred forty".