1587606949 has 2 divisors, whose sum is σ = 1587606950. Its totient is φ = 1587606948.

The previous prime is 1587606919. The next prime is 1587606953. The reversal of 1587606949 is 9496067851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1424534049 + 163072900 = 37743^2 + 12770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1587606949 - 2¹¹ = 1587604901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1587606949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1587606919) by changing a digit.

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 as a sum of consecutive naturals, namely, 793803474 + 793803475.

It is an arithmetic number, because the mean of its divisors is an integer number (793803475).

Almost surely, 2^1587606949 is an apocalyptic number.

It is an amenable number.

1587606949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1587606949 is an equidigital number, since it uses as much as digits as its factorization.

1587606949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 1587606949 is about 39844.7857190875. The cubic root of 1587606949 is about 1166.5794730572.

The spelling of 1587606949 in words is "one billion, five hundred eighty-seven million, six hundred six thousand, nine hundred forty-nine".