1307638005 has 8 divisors (see below), whose sum is σ = 2092220832. Its totient is φ = 697406928.

The previous prime is 1307637967. The next prime is 1307638019. The reversal of 1307638005 is 5008367031.

It is a happy number.

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

It is not a de Polignac number, because 1307638005 - 2¹¹ = 1307635957 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43587919 + ... + 43587948.

It is an arithmetic number, because the mean of its divisors is an integer number (261527604).

Almost surely, 2^1307638005 is an apocalyptic number.

1307638005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1307638005 is a deficient number, since it is larger than the sum of its proper divisors (784582827).

1307638005 is an equidigital number, since it uses as much as digits as its factorization.

1307638005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87175875.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1307638005 is about 36161.2777014308. The cubic root of 1307638005 is about 1093.5261629348.

The spelling of 1307638005 in words is "one billion, three hundred seven million, six hundred thirty-eight thousand, five".