1266012315 has 16 divisors (see below), whose sum is σ = 2250688800. Its totient is φ = 675206496.

The previous prime is 1266012311. The next prime is 1266012343. The reversal of 1266012315 is 5132106621.

1266012315 is a `hidden beast` number, since 1 + 26 + 601 + 2 + 31 + 5 = 666.

It is not a de Polignac number, because 1266012315 - 2² = 1266012311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1266012311) 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 15 ways as a sum of consecutive naturals, for example, 4688800 + ... + 4689069.

It is an arithmetic number, because the mean of its divisors is an integer number (140668050).

Almost surely, 2^1266012315 is an apocalyptic number.

1266012315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1266012315 is a deficient number, since it is larger than the sum of its proper divisors (984676485).

1266012315 is an equidigital number, since it uses as much as digits as its factorization.

1266012315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9377883 (or 9377877 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1266012315 is about 35581.0668052547. The cubic root of 1266012315 is about 1081.7975081838.

Adding to 1266012315 its reverse (5132106621), we get a palindrome (6398118936).

The spelling of 1266012315 in words is "one billion, two hundred sixty-six million, twelve thousand, three hundred fifteen".