1266797361 has 32 divisors (see below), whose sum is σ = 1788853248. Its totient is φ = 796273920.

The previous prime is 1266797353. The next prime is 1266797417. The reversal of 1266797361 is 1637976621.

It is a happy number.

It is not a de Polignac number, because 1266797361 - 2³ = 1266797353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1266797361.

It is not an unprimeable number, because it can be changed into a prime (1266790361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773035 + ... + 774671.

It is an arithmetic number, because the mean of its divisors is an integer number (55901664).

Almost surely, 2^1266797361 is an apocalyptic number.

It is an amenable number.

1266797361 is a deficient number, since it is larger than the sum of its proper divisors (522055887).

1266797361 is a wasteful number, since it uses less digits than its factorization.

1266797361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its digits is 571536, while the sum is 48.

The square root of 1266797361 is about 35592.0968896186. The cubic root of 1266797361 is about 1082.0210671799.

The spelling of 1266797361 in words is "one billion, two hundred sixty-six million, seven hundred ninety-seven thousand, three hundred sixty-one".