1280897132 has 6 divisors (see below), whose sum is σ = 2241569988. Its totient is φ = 640448564.

The previous prime is 1280897087. The next prime is 1280897159. The reversal of 1280897132 is 2317980821.

It is a self number, because there is not a number n which added to its sum of digits gives 1280897132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160112138 + ... + 160112145.

It is an arithmetic number, because the mean of its divisors is an integer number (373594998).

Almost surely, 2^1280897132 is an apocalyptic number.

It is an amenable number.

1280897132 is a deficient number, since it is larger than the sum of its proper divisors (960672856).

1280897132 is a wasteful number, since it uses less digits than its factorization.

1280897132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320224287 (or 320224285 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1280897132 is about 35789.6232447339. The cubic root of 1280897132 is about 1086.0206531169.

The spelling of 1280897132 in words is "one billion, two hundred eighty million, eight hundred ninety-seven thousand, one hundred thirty-two".