1266103885 has 8 divisors (see below), whose sum is σ = 1585382400. Its totient is φ = 968844624.

The previous prime is 1266103877. The next prime is 1266103921. The reversal of 1266103885 is 5883016621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266103885 - 2³ = 1266103877 is a prime.

It is a super-2 number, since 2×1266103885² = 3206038095224186450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504685 + ... + 5504914.

It is an arithmetic number, because the mean of its divisors is an integer number (198172800).

Almost surely, 2^1266103885 is an apocalyptic number.

It is an amenable number.

1266103885 is a deficient number, since it is larger than the sum of its proper divisors (319278515).

1266103885 is a wasteful number, since it uses less digits than its factorization.

1266103885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009627.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1266103885 is about 35582.3535618430. The cubic root of 1266103885 is about 1081.8235895018.

The spelling of 1266103885 in words is "one billion, two hundred sixty-six million, one hundred three thousand, eight hundred eighty-five".