1266883097 has 4 divisors (see below), whose sum is σ = 1279426596. Its totient is φ = 1254339600.

The previous prime is 1266883063. The next prime is 1266883109. The reversal of 1266883097 is 7903886621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1159470601 + 107412496 = 34051^2 + 10364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266883097 - 2¹⁰ = 1266882073 is a prime.

It is a super-2 number, since 2×1266883097² = 3209985562928622818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266883997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6271598 + ... + 6271799.

It is an arithmetic number, because the mean of its divisors is an integer number (319856649).

Almost surely, 2^1266883097 is an apocalyptic number.

It is an amenable number.

1266883097 is a deficient number, since it is larger than the sum of its proper divisors (12543499).

1266883097 is a wasteful number, since it uses less digits than its factorization.

1266883097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543498.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1266883097 is about 35593.3012939233. The cubic root of 1266883097 is about 1082.0454767838.

The spelling of 1266883097 in words is "one billion, two hundred sixty-six million, eight hundred eighty-three thousand, ninety-seven".