2782760155 has 16 divisors (see below), whose sum is σ = 3870111744. Its totient is φ = 1881300960.

The previous prime is 2782760117. The next prime is 2782760171. The reversal of 2782760155 is 5510672872.

It is not a de Polignac number, because 2782760155 - 2⁷ = 2782760027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557427 + ... + 562396.

It is an arithmetic number, because the mean of its divisors is an integer number (241881984).

Almost surely, 2^2782760155 is an apocalyptic number.

2782760155 is a deficient number, since it is larger than the sum of its proper divisors (1087351589).

2782760155 is a wasteful number, since it uses less digits than its factorization.

2782760155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119906.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 2782760155 is about 52751.8734738398. The cubic root of 2782760155 is about 1406.5610667778.

The spelling of 2782760155 in words is "two billion, seven hundred eighty-two million, seven hundred sixty thousand, one hundred fifty-five".