1325631770 has 24 divisors (see below), whose sum is σ = 2420310132. Its totient is φ = 522764480.

The previous prime is 1325631743. The next prime is 1325631773. The reversal of 1325631770 is 771365231.

It can be written as a sum of positive squares in 2 ways, for example, as 1316310961 + 9320809 = 36281^2 + 3053^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1325631770.

It is not an unprimeable number, because it can be changed into a prime (1325631773) 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 11 ways as a sum of consecutive naturals, for example, 37262 + ... + 63558.

Almost surely, 2^1325631770 is an apocalyptic number.

1325631770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1325631770 is a deficient number, since it is larger than the sum of its proper divisors (1094678362).

1325631770 is an equidigital number, since it uses as much as digits as its factorization.

1325631770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26446 (or 26375 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 1325631770 is about 36409.2264405604. The cubic root of 1325631770 is about 1098.5191561107.

The spelling of 1325631770 in words is "one billion, three hundred twenty-five million, six hundred thirty-one thousand, seven hundred seventy".