1266380504 has 16 divisors (see below), whose sum is σ = 2451059520. Its totient is φ = 612764640.

The previous prime is 1266380503. The next prime is 1266380519. The reversal of 1266380504 is 4050836621.

It is a super-2 number, since 2×1266380504² = 3207439161822588032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266380503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552939 + ... + 2553434.

It is an arithmetic number, because the mean of its divisors is an integer number (153191220).

Almost surely, 2^1266380504 is an apocalyptic number.

It is an amenable number.

1266380504 is a deficient number, since it is larger than the sum of its proper divisors (1184679016).

1266380504 is a wasteful number, since it uses less digits than its factorization.

1266380504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106410 (or 5106406 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1266380504 is about 35586.2403746167. The cubic root of 1266380504 is about 1081.9023695482.

The spelling of 1266380504 in words is "one billion, two hundred sixty-six million, three hundred eighty thousand, five hundred four".