2049281280 has 108 divisors (see below), whose sum is σ = 7090339620. Its totient is φ = 546471936.

The previous prime is 2049281243. The next prime is 2049281281. The reversal of 2049281280 is 821829402.

It can be written as a sum of positive squares in 2 ways, for example, as 767068416 + 1282212864 = 27696^2 + 35808^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049281281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77425 + ... + 100464.

Almost surely, 2^2049281280 is an apocalyptic number.

2049281280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2049281280 is an abundant number, since it is smaller than the sum of its proper divisors (5041058340).

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

2049281280 is a wasteful number, since it uses less digits than its factorization.

2049281280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177916 (or 177899 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 2049281280 is about 45268.9880602604. The cubic root of 2049281280 is about 1270.1856177742.

The spelling of 2049281280 in words is "two billion, forty-nine million, two hundred eighty-one thousand, two hundred eighty".