1267798481 has 8 divisors (see below), whose sum is σ = 1321531200. Its totient is φ = 1214733520.

The previous prime is 1267798471. The next prime is 1267798489. The reversal of 1267798481 is 1848977621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1267798481 - 2⁶ = 1267798417 is a prime.

It is a super-2 number, since 2×1267798481² = 3214625976851814722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1267798489) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 163061 + ... + 170658.

It is an arithmetic number, because the mean of its divisors is an integer number (165191400).

Almost surely, 2^1267798481 is an apocalyptic number.

It is an amenable number.

1267798481 is a deficient number, since it is larger than the sum of its proper divisors (53732719).

1267798481 is a wasteful number, since it uses less digits than its factorization.

1267798481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333879.

The product of its digits is 1354752, while the sum is 53.

The square root of 1267798481 is about 35606.1579084293. The cubic root of 1267798481 is about 1082.3060240162.

The spelling of 1267798481 in words is "one billion, two hundred sixty-seven million, seven hundred ninety-eight thousand, four hundred eighty-one".