1281150897 has 8 divisors (see below), whose sum is σ = 1839601344. Its totient is φ = 788400528.

The previous prime is 1281150887. The next prime is 1281150917. The reversal of 1281150897 is 7980511821.

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

It is not a de Polignac number, because 1281150897 - 2¹⁴ = 1281134513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1281150887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16424973 + ... + 16425050.

It is an arithmetic number, because the mean of its divisors is an integer number (229950168).

Almost surely, 2^1281150897 is an apocalyptic number.

It is an amenable number.

1281150897 is a deficient number, since it is larger than the sum of its proper divisors (558450447).

1281150897 is a wasteful number, since it uses less digits than its factorization.

1281150897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32850039.

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1281150897 is about 35793.1683006688. The cubic root of 1281150897 is about 1086.0923673934.

The spelling of 1281150897 in words is "one billion, two hundred eighty-one million, one hundred fifty thousand, eight hundred ninety-seven".