1205148805 has 16 divisors (see below), whose sum is σ = 1655501184. Its totient is φ = 825024960.

The previous prime is 1205148787. The next prime is 1205148851. The reversal of 1205148805 is 5088415021.

It is not a de Polignac number, because 1205148805 - 2⁵ = 1205148773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 49540.

It is an arithmetic number, because the mean of its divisors is an integer number (103468824).

Almost surely, 2^1205148805 is an apocalyptic number.

It is an amenable number.

1205148805 is a deficient number, since it is larger than the sum of its proper divisors (450352379).

1205148805 is an equidigital number, since it uses as much as digits as its factorization.

1205148805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56796.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 1205148805 is about 34715.2532037432. The cubic root of 1205148805 is about 1064.1762400154.

The spelling of 1205148805 in words is "one billion, two hundred five million, one hundred forty-eight thousand, eight hundred five".