1275821948 has 12 divisors (see below), whose sum is σ = 2233261800. Its totient is φ = 637747152.

The previous prime is 1275821929. The next prime is 1275821971. The reversal of 1275821948 is 8491285721.

It is a congruent 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, 22511 + ... + 55302.

It is an arithmetic number, because the mean of its divisors is an integer number (186105150).

Almost surely, 2^1275821948 is an apocalyptic number.

It is an amenable number.

1275821948 is a deficient number, since it is larger than the sum of its proper divisors (957439852).

1275821948 is a wasteful number, since it uses less digits than its factorization.

1275821948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81916 (or 81914 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 1275821948 is about 35718.6498625018. The cubic root of 1275821948 is about 1084.5844070806.

The spelling of 1275821948 in words is "one billion, two hundred seventy-five million, eight hundred twenty-one thousand, nine hundred forty-eight".