1087628309 has 2 divisors, whose sum is σ = 1087628310. Its totient is φ = 1087628308.

The previous prime is 1087628293. The next prime is 1087628411. The reversal of 1087628309 is 9038267801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644652100 + 442976209 = 25390^2 + 21047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087628309 - 2⁴ = 1087628293 is a prime.

It is a super-3 number, since 3×1087628309³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1087628309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087628909) 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 as a sum of consecutive naturals, namely, 543814154 + 543814155.

It is an arithmetic number, because the mean of its divisors is an integer number (543814155).

Almost surely, 2^1087628309 is an apocalyptic number.

It is an amenable number.

1087628309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087628309 is an equidigital number, since it uses as much as digits as its factorization.

1087628309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1087628309 is about 32979.2102543405. The cubic root of 1087628309 is about 1028.3955001015.

The spelling of 1087628309 in words is "one billion, eighty-seven million, six hundred twenty-eight thousand, three hundred nine".