1267902481 has 2 divisors, whose sum is σ = 1267902482. Its totient is φ = 1267902480.

The previous prime is 1267902469. The next prime is 1267902529. The reversal of 1267902481 is 1842097621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760932225 + 506970256 = 27585^2 + 22516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1267902481 - 2²⁷ = 1133684753 is a prime.

It is a super-2 number, since 2×1267902481² = 3215153402651910722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1267902781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633951240 + 633951241.

It is an arithmetic number, because the mean of its divisors is an integer number (633951241).

Almost surely, 2^1267902481 is an apocalyptic number.

It is an amenable number.

1267902481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267902481 is an equidigital number, since it uses as much as digits as its factorization.

1267902481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1267902481 is about 35607.6183000211. The cubic root of 1267902481 is about 1082.3356177702.

The spelling of 1267902481 in words is "one billion, two hundred sixty-seven million, nine hundred two thousand, four hundred eighty-one".