1205163005 has 8 divisors (see below), whose sum is σ = 1496064600. Its totient is φ = 930884416.

The previous prime is 1205162983. The next prime is 1205163067. The reversal of 1205163005 is 5003615021.

It can be written as a sum of positive squares in 4 ways, for example, as 148522969 + 1056640036 = 12187^2 + 32506^2 .

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 1205163005 - 2⁶ = 1205162941 is a prime.

It is a congruent 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, 4155590 + ... + 4155879.

It is an arithmetic number, because the mean of its divisors is an integer number (187008075).

Almost surely, 2^1205163005 is an apocalyptic number.

It is an amenable number.

1205163005 is a deficient number, since it is larger than the sum of its proper divisors (290901595).

1205163005 is an equidigital number, since it uses as much as digits as its factorization.

1205163005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311503.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1205163005 is about 34715.4577241897. The cubic root of 1205163005 is about 1064.1804196495.

Adding to 1205163005 its reverse (5003615021), we get a palindrome (6208778026).

The spelling of 1205163005 in words is "one billion, two hundred five million, one hundred sixty-three thousand, five".