2778544160 has 48 divisors (see below), whose sum is σ = 7502072256. Its totient is φ = 952643328.

The previous prime is 2778544159. The next prime is 2778544169. The reversal of 2778544160 is 614458772.

It is not an unprimeable number, because it can be changed into a prime (2778544169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239302 + ... + 1241541.

It is an arithmetic number, because the mean of its divisors is an integer number (156293172).

Almost surely, 2^2778544160 is an apocalyptic number.

2778544160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2778544160 is an abundant number, since it is smaller than the sum of its proper divisors (4723528096).

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

2778544160 is a wasteful number, since it uses less digits than its factorization.

2778544160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480865 (or 2480857 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 2778544160 is about 52711.8977082025. The cubic root of 2778544160 is about 1405.8503753089.

The spelling of 2778544160 in words is "two billion, seven hundred seventy-eight million, five hundred forty-four thousand, one hundred sixty".