1266200018 has 16 divisors (see below), whose sum is σ = 2011785984. Its totient is φ = 595632960.

The previous prime is 1266200017. The next prime is 1266200027. The reversal of 1266200018 is 8100026621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266200018.

It is not an unprimeable number, because it can be changed into a prime (1266200011) 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 7 ways as a sum of consecutive naturals, for example, 114071 + ... + 124677.

It is an arithmetic number, because the mean of its divisors is an integer number (125736624).

Almost surely, 2^1266200018 is an apocalyptic number.

1266200018 is a deficient number, since it is larger than the sum of its proper divisors (745585966).

1266200018 is a wasteful number, since it uses less digits than its factorization.

1266200018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1266200018 is about 35583.7043883854. The cubic root of 1266200018 is about 1081.8509691180.

Adding to 1266200018 its reverse (8100026621), we get a palindrome (9366226639).

The spelling of 1266200018 in words is "one billion, two hundred sixty-six million, two hundred thousand, eighteen".