1315666605 has 64 divisors (see below), whose sum is σ = 2370134016. Its totient is φ = 617760000.

The previous prime is 1315666579. The next prime is 1315666607. The reversal of 1315666605 is 5066665131.

It is not a de Polignac number, because 1315666605 - 2¹⁶ = 1315601069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315666607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 673380 + ... + 675330.

It is an arithmetic number, because the mean of its divisors is an integer number (37033344).

Almost surely, 2^1315666605 is an apocalyptic number.

1315666605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315666605 is a deficient number, since it is larger than the sum of its proper divisors (1054467411).

1315666605 is a wasteful number, since it uses less digits than its factorization.

1315666605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1315666605 is about 36272.1188380276. The cubic root of 1315666605 is about 1095.7595988819.

The spelling of 1315666605 in words is "one billion, three hundred fifteen million, six hundred sixty-six thousand, six hundred five".