1325771764 has 12 divisors (see below), whose sum is σ = 2325889188. Its totient is φ = 661232000.

The previous prime is 1325771749. The next prime is 1325771771. The reversal of 1325771764 is 4671775231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1053521764 + 272250000 = 32458^2 + 16500^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1325771764.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411667 + ... + 414874.

It is an arithmetic number, because the mean of its divisors is an integer number (193824099).

Almost surely, 2^1325771764 is an apocalyptic number.

It is an amenable number.

1325771764 is a deficient number, since it is larger than the sum of its proper divisors (1000117424).

1325771764 is a wasteful number, since it uses less digits than its factorization.

1325771764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826946 (or 826944 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 1325771764 is about 36411.1488970068. The cubic root of 1325771764 is about 1098.5578246362.

The spelling of 1325771764 in words is "one billion, three hundred twenty-five million, seven hundred seventy-one thousand, seven hundred sixty-four".