2149459280 has 20 divisors (see below), whose sum is σ = 4997493012. Its totient is φ = 859783680.

The previous prime is 2149459271. The next prime is 2149459283. The reversal of 2149459280 is 829549412.

It can be written as a sum of positive squares in 2 ways, for example, as 1617326656 + 532132624 = 40216^2 + 23068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149459283) 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, 13434041 + ... + 13434200.

Almost surely, 2^2149459280 is an apocalyptic number.

2149459280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149459280 is an abundant number, since it is smaller than the sum of its proper divisors (2848033732).

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

2149459280 is a wasteful number, since it uses less digits than its factorization.

2149459280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26868254 (or 26868248 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 2149459280 is about 46362.2613771158. The cubic root of 2149459280 is about 1290.5546720311.

The spelling of 2149459280 in words is "two billion, one hundred forty-nine million, four hundred fifty-nine thousand, two hundred eighty".