1285268368 has 30 divisors (see below), whose sum is σ = 2526728594. Its totient is φ = 633226752.

The previous prime is 1285268351. The next prime is 1285268407. The reversal of 1285268368 is 8638625821.

It can be written as a sum of positive squares in 3 ways, for example, as 791184384 + 494083984 = 28128^2 + 22228^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224708 + ... + 1225756.

Almost surely, 2^1285268368 is an apocalyptic number.

It is an amenable number.

1285268368 is a deficient number, since it is larger than the sum of its proper divisors (1241460226).

1285268368 is an frugal number, since it uses more digits than its factorization.

1285268368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 1124 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 1285268368 is about 35850.6397153524. The cubic root of 1285268368 is about 1087.2546482746.

The spelling of 1285268368 in words is "one billion, two hundred eighty-five million, two hundred sixty-eight thousand, three hundred sixty-eight".