2780457895 has 16 divisors (see below), whose sum is σ = 3395543040. Its totient is φ = 2185092000.

The previous prime is 2780457893. The next prime is 2780457917. The reversal of 2780457895 is 5987540872.

It is not a de Polignac number, because 2780457895 - 2¹ = 2780457893 is a prime.

It is a super-2 number, since 2×2780457895² = 15461892211735662050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780457893) by changing a digit.

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, 573130 + ... + 577960.

It is an arithmetic number, because the mean of its divisors is an integer number (212221440).

Almost surely, 2^2780457895 is an apocalyptic number.

2780457895 is a deficient number, since it is larger than the sum of its proper divisors (615085145).

2780457895 is a wasteful number, since it uses less digits than its factorization.

2780457895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846.

The product of its (nonzero) digits is 5644800, while the sum is 55.

The square root of 2780457895 is about 52730.0473639082. The cubic root of 2780457895 is about 1406.1730631949.

The spelling of 2780457895 in words is "two billion, seven hundred eighty million, four hundred fifty-seven thousand, eight hundred ninety-five".