2540948369 has 2 divisors, whose sum is σ = 2540948370. Its totient is φ = 2540948368.

The previous prime is 2540948363. The next prime is 2540948381. The reversal of 2540948369 is 9638490452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2282928400 + 258019969 = 47780^2 + 16063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540948369 is a prime.

It is a super-2 number, since 2×2540948369² = 12912837227847520322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2540948363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270474184 + 1270474185.

It is an arithmetic number, because the mean of its divisors is an integer number (1270474185).

Almost surely, 2^2540948369 is an apocalyptic number.

It is an amenable number.

2540948369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540948369 is an equidigital number, since it uses as much as digits as its factorization.

2540948369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The square root of 2540948369 is about 50407.8205142813. The cubic root of 2540948369 is about 1364.5787800748.

The spelling of 2540948369 in words is "two billion, five hundred forty million, nine hundred forty-eight thousand, three hundred sixty-nine".