2783778180 has 96 divisors (see below), whose sum is σ = 7865956224. Its totient is φ = 735581184.

The previous prime is 2783778157. The next prime is 2783778187. The reversal of 2783778180 is 818773872.

It is a super-2 number, since 2×2783778180² = 15498841910888224800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2783778187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4262734 + ... + 4263386.

It is an arithmetic number, because the mean of its divisors is an integer number (81937044).

Almost surely, 2^2783778180 is an apocalyptic number.

2783778180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2783778180 is an abundant number, since it is smaller than the sum of its proper divisors (5082178044).

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

2783778180 is a wasteful number, since it uses less digits than its factorization.

2783778180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 51.

The square root of 2783778180 is about 52761.5217748692. The cubic root of 2783778180 is about 1406.7325679339.

The spelling of 2783778180 in words is "two billion, seven hundred eighty-three million, seven hundred seventy-eight thousand, one hundred eighty".