1266887794 has 16 divisors (see below), whose sum is σ = 2051334720. Its totient is φ = 585009040.

The previous prime is 1266887761. The next prime is 1266887813. The reversal of 1266887794 is 4977886621.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473512 + ... + 476179.

It is an arithmetic number, because the mean of its divisors is an integer number (128208420).

Almost surely, 2^1266887794 is an apocalyptic number.

1266887794 is a deficient number, since it is larger than the sum of its proper divisors (784446926).

1266887794 is a wasteful number, since it uses less digits than its factorization.

1266887794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949745.

The product of its digits is 8128512, while the sum is 58.

The square root of 1266887794 is about 35593.3672753787. The cubic root of 1266887794 is about 1082.0468140188.

The spelling of 1266887794 in words is "one billion, two hundred sixty-six million, eight hundred eighty-seven thousand, seven hundred ninety-four".