1280875487 has 8 divisors (see below), whose sum is σ = 1288680096. Its totient is φ = 1273093632.

The previous prime is 1280875483. The next prime is 1280875501. The reversal of 1280875487 is 7845780821.

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 1280875487 - 2² = 1280875483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280875483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114863 + ... + 125519.

It is an arithmetic number, because the mean of its divisors is an integer number (161085012).

Almost surely, 2^1280875487 is an apocalyptic number.

1280875487 is a deficient number, since it is larger than the sum of its proper divisors (7804609).

1280875487 is a wasteful number, since it uses less digits than its factorization.

1280875487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11377.

The product of its (nonzero) digits is 1003520, while the sum is 50.

The square root of 1280875487 is about 35789.3208513378. The cubic root of 1280875487 is about 1086.0145357770.

The spelling of 1280875487 in words is "one billion, two hundred eighty million, eight hundred seventy-five thousand, four hundred eighty-seven".