1266960156 has 96 divisors (see below), whose sum is σ = 3902556672. Its totient is φ = 309719040.

The previous prime is 1266960103. The next prime is 1266960169. The reversal of 1266960156 is 6510696621.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24621 + ... + 56036.

It is an arithmetic number, because the mean of its divisors is an integer number (40651632).

Almost surely, 2^1266960156 is an apocalyptic number.

It is an amenable number.

1266960156 is an abundant number, since it is smaller than the sum of its proper divisors (2635596516).

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

1266960156 is a wasteful number, since it uses less digits than its factorization.

1266960156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80699 (or 80697 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1266960156 is about 35594.3837704770. The cubic root of 1266960156 is about 1082.0674150490.

The spelling of 1266960156 in words is "one billion, two hundred sixty-six million, nine hundred sixty thousand, one hundred fifty-six".