2074185640 has 64 divisors (see below), whose sum is σ = 4956014160. Its totient is φ = 778567680.

The previous prime is 2074185599. The next prime is 2074185643. The reversal of 2074185640 is 465814702.

It can be written as a sum of positive squares in 8 ways, for example, as 487438084 + 1586747556 = 22078^2 + 39834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2074185640.

It is not an unprimeable number, because it can be changed into a prime (2074185643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235720 + ... + 244360.

Almost surely, 2^2074185640 is an apocalyptic number.

2074185640 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 2074185640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478007080).

2074185640 is an abundant number, since it is smaller than the sum of its proper divisors (2881828520).

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

2074185640 is a wasteful number, since it uses less digits than its factorization.

2074185640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9022 (or 9018 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 2074185640 is about 45543.2282562402. The cubic root of 2074185640 is about 1275.3103209793.

The spelling of 2074185640 in words is "two billion, seventy-four million, one hundred eighty-five thousand, six hundred forty".