1266338412 has 36 divisors (see below), whose sum is σ = 3202453800. Its totient is φ = 421924032.

The previous prime is 1266338401. The next prime is 1266338413. The reversal of 1266338412 is 2148336621.

1266338412 is a `hidden beast` number, since 1 + 2 + 6 + 633 + 8 + 4 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1266338412² = 3207225947413363488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1266338413) 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 11 ways as a sum of consecutive naturals, for example, 90648 + ... + 103680.

It is an arithmetic number, because the mean of its divisors is an integer number (88957050).

Almost surely, 2^1266338412 is an apocalyptic number.

1266338412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266338412 is an abundant number, since it is smaller than the sum of its proper divisors (1936115388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266338412 is a wasteful number, since it uses less digits than its factorization.

1266338412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742 (or 15737 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1266338412 is about 35585.6489613440. The cubic root of 1266338412 is about 1081.8903826457.

The spelling of 1266338412 in words is "one billion, two hundred sixty-six million, three hundred thirty-eight thousand, four hundred twelve".