1281226467 has 16 divisors (see below), whose sum is σ = 1787076000. Its totient is φ = 815426304.

The previous prime is 1281226451. The next prime is 1281226481. The reversal of 1281226467 is 7646221821.

It is not a de Polignac number, because 1281226467 - 2⁴ = 1281226451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1281226367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74992 + ... + 90477.

It is an arithmetic number, because the mean of its divisors is an integer number (111692250).

Almost surely, 2^1281226467 is an apocalyptic number.

1281226467 is a deficient number, since it is larger than the sum of its proper divisors (505849533).

1281226467 is a wasteful number, since it uses less digits than its factorization.

1281226467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165590.

The product of its digits is 64512, while the sum is 39.

The square root of 1281226467 is about 35794.2239334784. The cubic root of 1281226467 is about 1086.1137217310.

The spelling of 1281226467 in words is "one billion, two hundred eighty-one million, two hundred twenty-six thousand, four hundred sixty-seven".