1275648090 has 16 divisors (see below), whose sum is σ = 3061555488. Its totient is φ = 340172816.

The previous prime is 1275648029. The next prime is 1275648107. The reversal of 1275648090 is 908465721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21260772 + ... + 21260831.

It is an arithmetic number, because the mean of its divisors is an integer number (191347218).

Almost surely, 2^1275648090 is an apocalyptic number.

1275648090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275648090 is an abundant number, since it is smaller than the sum of its proper divisors (1785907398).

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

1275648090 is a wasteful number, since it uses less digits than its factorization.

1275648090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42521613.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1275648090 is about 35716.2160649753. The cubic root of 1275648090 is about 1084.5351389096.

The spelling of 1275648090 in words is "one billion, two hundred seventy-five million, six hundred forty-eight thousand, ninety".