2149554280 has 16 divisors (see below), whose sum is σ = 4836497220. Its totient is φ = 859821696.

The previous prime is 2149554247. The next prime is 2149554283. The reversal of 2149554280 is 824559412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1728730084 + 420824196 = 41578^2 + 20514^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 53738857 = 2149554280 / (2 + 1 + 4 + 9 + 5 + 5 + 4 + 2 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (2149554283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26869389 + ... + 26869468.

Almost surely, 2^2149554280 is an apocalyptic number.

2149554280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149554280 is an abundant number, since it is smaller than the sum of its proper divisors (2686942940).

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

2149554280 is a wasteful number, since it uses less digits than its factorization.

2149554280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53738868 (or 53738864 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2149554280 is about 46363.2859059838. The cubic root of 2149554280 is about 1290.5736847023.

The spelling of 2149554280 in words is "two billion, one hundred forty-nine million, five hundred fifty-four thousand, two hundred eighty".