2040451380 has 144 divisors (see below), whose sum is σ = 6828494400. Its totient is φ = 489054720.

The previous prime is 2040451331. The next prime is 2040451381. The reversal of 2040451380 is 831540402.

2040451380 is a `hidden beast` number, since 204 + 0 + 451 + 3 + 8 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040451381) 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 47 ways as a sum of consecutive naturals, for example, 170431 + ... + 182009.

It is an arithmetic number, because the mean of its divisors is an integer number (47420100).

Almost surely, 2^2040451380 is an apocalyptic number.

2040451380 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 2040451380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3414247200).

2040451380 is an abundant number, since it is smaller than the sum of its proper divisors (4788043020).

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

2040451380 is a wasteful number, since it uses less digits than its factorization.

2040451380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694 (or 11689 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2040451380 is about 45171.3557467562. The cubic root of 2040451380 is about 1268.3586749499.

Adding to 2040451380 its reverse (831540402), we get a palindrome (2871991782).

The spelling of 2040451380 in words is "two billion, forty million, four hundred fifty-one thousand, three hundred eighty".