1275664330 has 32 divisors (see below), whose sum is σ = 2338042320. Its totient is φ = 500997120.

The previous prime is 1275664307. The next prime is 1275664337. The reversal of 1275664330 is 334665721.

It can be written as a sum of positive squares in 8 ways, for example, as 920454921 + 355209409 = 30339^2 + 18847^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1275664330.

It is not an unprimeable number, because it can be changed into a prime (1275664337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411426 + ... + 414514.

Almost surely, 2^1275664330 is an apocalyptic number.

1275664330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275664330 is a deficient number, since it is larger than the sum of its proper divisors (1062377990).

1275664330 is a wasteful number, since it uses less digits than its factorization.

1275664330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 1275664330 is about 35716.4434119636. The cubic root of 1275664330 is about 1084.5397412175.

The spelling of 1275664330 in words is "one billion, two hundred seventy-five million, six hundred sixty-four thousand, three hundred thirty".