2782072905 has 16 divisors (see below), whose sum is σ = 4453180224. Its totient is φ = 1483151040.

The previous prime is 2782072901. The next prime is 2782072963. The reversal of 2782072905 is 5092702872.

It is a happy number.

It is not a de Polignac number, because 2782072905 - 2² = 2782072901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2782072901) 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 15 ways as a sum of consecutive naturals, for example, 586 + ... + 74595.

It is an arithmetic number, because the mean of its divisors is an integer number (278323764).

Almost surely, 2^2782072905 is an apocalyptic number.

It is an amenable number.

2782072905 is a deficient number, since it is larger than the sum of its proper divisors (1671107319).

2782072905 is a wasteful number, since it uses less digits than its factorization.

2782072905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77656.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 2782072905 is about 52745.3590849470. The cubic root of 2782072905 is about 1406.4452658430.

The spelling of 2782072905 in words is "two billion, seven hundred eighty-two million, seventy-two thousand, nine hundred five".