2780818130 has 16 divisors (see below), whose sum is σ = 5049770904. Its totient is φ = 1102483200.

The previous prime is 2780818123. The next prime is 2780818177. The reversal of 2780818130 is 318180872.

It can be written as a sum of positive squares in 4 ways, for example, as 989920369 + 1790897761 = 31463^2 + 42319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229321 + ... + 1231580.

Almost surely, 2^2780818130 is an apocalyptic number.

2780818130 is a deficient number, since it is larger than the sum of its proper divisors (2268952774).

2780818130 is a wasteful number, since it uses less digits than its factorization.

2780818130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461021.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 2780818130 is about 52733.4630950784. The cubic root of 2780818130 is about 1406.2337883102.

The spelling of 2780818130 in words is "two billion, seven hundred eighty million, eight hundred eighteen thousand, one hundred thirty".