1587157105 has 8 divisors (see below), whose sum is σ = 1910242152. Its totient is φ = 1265956608.

The previous prime is 1587157097. The next prime is 1587157123. The reversal of 1587157105 is 5017517851.

It can be written as a sum of positive squares in 4 ways, for example, as 32353344 + 1554803761 = 5688^2 + 39431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1587157105 - 2³ = 1587157097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469282 + ... + 472651.

It is an arithmetic number, because the mean of its divisors is an integer number (238780269).

Almost surely, 2^1587157105 is an apocalyptic number.

It is an amenable number.

1587157105 is a deficient number, since it is larger than the sum of its proper divisors (323085047).

1587157105 is an equidigital number, since it uses as much as digits as its factorization.

1587157105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942275.

The product of its (nonzero) digits is 49000, while the sum is 40.

The square root of 1587157105 is about 39839.1403647217. The cubic root of 1587157105 is about 1166.4692803026.

The spelling of 1587157105 in words is "one billion, five hundred eighty-seven million, one hundred fifty-seven thousand, one hundred five".