2540772798 has 16 divisors (see below), whose sum is σ = 5133933840. Its totient is φ = 838192896.

The previous prime is 2540772797. The next prime is 2540772827. The reversal of 2540772798 is 8972770452.

It is a super-2 number, since 2×2540772798² = 12911052822113497608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2540772798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540772797) 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 7 ways as a sum of consecutive naturals, for example, 2182213 + ... + 2183376.

It is an arithmetic number, because the mean of its divisors is an integer number (320870865).

Almost surely, 2^2540772798 is an apocalyptic number.

2540772798 is an abundant number, since it is smaller than the sum of its proper divisors (2593161042).

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

2540772798 is a wasteful number, since it uses less digits than its factorization.

2540772798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365691.

The product of its (nonzero) digits is 1975680, while the sum is 51.

The square root of 2540772798 is about 50406.0789786311. The cubic root of 2540772798 is about 1364.5473500803.

The spelling of 2540772798 in words is "two billion, five hundred forty million, seven hundred seventy-two thousand, seven hundred ninety-eight".