1288504545 has 32 divisors (see below), whose sum is σ = 2186704512. Its totient is φ = 645645312.

The previous prime is 1288504541. The next prime is 1288504549. The reversal of 1288504545 is 5454058821.

It is an interprime number because it is at equal distance from previous prime (1288504541) and next prime (1288504549).

It is not a de Polignac number, because 1288504545 - 2² = 1288504541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1288504497 and 1288504506.

It is not an unprimeable number, because it can be changed into a prime (1288504541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152194 + ... + 160436.

It is an arithmetic number, because the mean of its divisors is an integer number (68334516).

Almost surely, 2^1288504545 is an apocalyptic number.

1288504545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1288504545 is a deficient number, since it is larger than the sum of its proper divisors (898199967).

1288504545 is a wasteful number, since it uses less digits than its factorization.

1288504545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8881.

The product of its (nonzero) digits is 256000, while the sum is 42.

The square root of 1288504545 is about 35895.7454999893. The cubic root of 1288504545 is about 1088.1664162187.

The spelling of 1288504545 in words is "one billion, two hundred eighty-eight million, five hundred four thousand, five hundred forty-five".