2543279069 has 2 divisors, whose sum is σ = 2543279070. Its totient is φ = 2543279068.

The previous prime is 2543279023. The next prime is 2543279083. The reversal of 2543279069 is 9609723452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1948163044 + 595116025 = 44138^2 + 24395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543279069 - 2⁸ = 2543278813 is a prime.

It is a super-2 number, since 2×2543279069² = 12936536845627013522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543279099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271639534 + 1271639535.

It is an arithmetic number, because the mean of its divisors is an integer number (1271639535).

Almost surely, 2^2543279069 is an apocalyptic number.

It is an amenable number.

2543279069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543279069 is an equidigital number, since it uses as much as digits as its factorization.

2543279069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 2543279069 is about 50430.9336518768. The cubic root of 2543279069 is about 1364.9958752397.

The spelling of 2543279069 in words is "two billion, five hundred forty-three million, two hundred seventy-nine thousand, sixty-nine".