1288535852 has 6 divisors (see below), whose sum is σ = 2254937748. Its totient is φ = 644267924.

The previous prime is 1288535849. The next prime is 1288535873. The reversal of 1288535852 is 2585358821.

It is a junction number, because it is equal to n+sod(n) for n = 1288535797 and 1288535806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161066978 + ... + 161066985.

It is an arithmetic number, because the mean of its divisors is an integer number (375822958).

Almost surely, 2^1288535852 is an apocalyptic number.

It is an amenable number.

1288535852 is a deficient number, since it is larger than the sum of its proper divisors (966401896).

1288535852 is a wasteful number, since it uses less digits than its factorization.

1288535852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322133967 (or 322133965 counting only the distinct ones).

The product of its digits is 768000, while the sum is 47.

The square root of 1288535852 is about 35896.1815796611. The cubic root of 1288535852 is about 1088.1752292648.

The spelling of 1288535852 in words is "one billion, two hundred eighty-eight million, five hundred thirty-five thousand, eight hundred fifty-two".