1261968467 has 4 divisors (see below), whose sum is σ = 1328387880. Its totient is φ = 1195549056.

The previous prime is 1261968403. The next prime is 1261968481. The reversal of 1261968467 is 7648691621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1261968467 - 2⁶ = 1261968403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1261968167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33209678 + ... + 33209715.

It is an arithmetic number, because the mean of its divisors is an integer number (332096970).

Almost surely, 2^1261968467 is an apocalyptic number.

1261968467 is a deficient number, since it is larger than the sum of its proper divisors (66419413).

1261968467 is an equidigital number, since it uses as much as digits as its factorization.

1261968467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66419412.

The product of its digits is 870912, while the sum is 50.

The square root of 1261968467 is about 35524.1955151697. The cubic root of 1261968467 is about 1080.6444676028.

The spelling of 1261968467 in words is "one billion, two hundred sixty-one million, nine hundred sixty-eight thousand, four hundred sixty-seven".