1275853864 has 16 divisors (see below), whose sum is σ = 2399922720. Its totient is φ = 635874480.

The previous prime is 1275853853. The next prime is 1275853879. The reversal of 1275853864 is 4683585721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253914 + ... + 258889.

It is an arithmetic number, because the mean of its divisors is an integer number (149995170).

Almost surely, 2^1275853864 is an apocalyptic number.

It is an amenable number.

1275853864 is a deficient number, since it is larger than the sum of its proper divisors (1124068856).

1275853864 is a wasteful number, since it uses less digits than its factorization.

1275853864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513120 (or 513116 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The square root of 1275853864 is about 35719.0966291142. The cubic root of 1275853864 is about 1084.5934510038.

The spelling of 1275853864 in words is "one billion, two hundred seventy-five million, eight hundred fifty-three thousand, eight hundred sixty-four".