1266002641 has 4 divisors (see below), whose sum is σ = 1266115392. Its totient is φ = 1265889892.

The previous prime is 1266002599. The next prime is 1266002659. The reversal of 1266002641 is 1462006621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1266002641 - 2¹⁹ = 1265478353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266002671) 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 in 3 ways as a sum of consecutive naturals, for example, 37405 + ... + 62698.

It is an arithmetic number, because the mean of its divisors is an integer number (316528848).

Almost surely, 2^1266002641 is an apocalyptic number.

It is an amenable number.

1266002641 is a deficient number, since it is larger than the sum of its proper divisors (112751).

1266002641 is a wasteful number, since it uses less digits than its factorization.

1266002641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112750.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1266002641 is about 35580.9308619097. The cubic root of 1266002641 is about 1081.7947527246.

The spelling of 1266002641 in words is "one billion, two hundred sixty-six million, two thousand, six hundred forty-one".