1275538768 has 40 divisors (see below), whose sum is σ = 2831620352. Its totient is φ = 545263488.

The previous prime is 1275538763. The next prime is 1275538843. The reversal of 1275538768 is 8678355721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275538763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30121 + ... + 58807.

Almost surely, 2^1275538768 is an apocalyptic number.

It is an amenable number.

1275538768 is an abundant number, since it is smaller than the sum of its proper divisors (1556081584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275538768 is a wasteful number, since it uses less digits than its factorization.

1275538768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29099 (or 29093 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 1275538768 is about 35714.6856069041. The cubic root of 1275538768 is about 1084.5041567658.

The spelling of 1275538768 in words is "one billion, two hundred seventy-five million, five hundred thirty-eight thousand, seven hundred sixty-eight".