1262916541 has 2 divisors, whose sum is σ = 1262916542. Its totient is φ = 1262916540.

The previous prime is 1262916539. The next prime is 1262916593. The reversal of 1262916541 is 1456192621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1145822500 + 117094041 = 33850^2 + 10821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1262916541 - 2¹ = 1262916539 is a prime.

Together with 1262916539, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1262916541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262916511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631458270 + 631458271.

It is an arithmetic number, because the mean of its divisors is an integer number (631458271).

Almost surely, 2^1262916541 is an apocalyptic number.

It is an amenable number.

1262916541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262916541 is an equidigital number, since it uses as much as digits as its factorization.

1262916541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 1262916541 is about 35537.5370699771. The cubic root of 1262916541 is about 1080.9150170108.

The spelling of 1262916541 in words is "one billion, two hundred sixty-two million, nine hundred sixteen thousand, five hundred forty-one".