1587171013 has 2 divisors, whose sum is σ = 1587171014. Its totient is φ = 1587171012.

The previous prime is 1587171007. The next prime is 1587171041. The reversal of 1587171013 is 3101717851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410227809 + 176943204 = 37553^2 + 13302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1587171013 - 2¹³ = 1587162821 is a prime.

It is a super-2 number, since 2×1587171013² = 5038223649014892338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1587171013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1587171043) 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, 793585506 + 793585507.

It is an arithmetic number, because the mean of its divisors is an integer number (793585507).

Almost surely, 2^1587171013 is an apocalyptic number.

It is an amenable number.

1587171013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1587171013 is an equidigital number, since it uses as much as digits as its factorization.

1587171013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 34.

The square root of 1587171013 is about 39839.3149162984. The cubic root of 1587171013 is about 1166.4726874862.

Adding to 1587171013 its reverse (3101717851), we get a palindrome (4688888864).

The spelling of 1587171013 in words is "one billion, five hundred eighty-seven million, one hundred seventy-one thousand, thirteen".