1205161308 has 72 divisors (see below), whose sum is σ = 3383377200. Its totient is φ = 370813248.

The previous prime is 1205161273. The next prime is 1205161333. The reversal of 1205161308 is 8031615021.

1205161308 is a `hidden beast` number, since 12 + 0 + 516 + 130 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14763 + ... + 51266.

It is an arithmetic number, because the mean of its divisors is an integer number (46991350).

Almost surely, 2^1205161308 is an apocalyptic number.

1205161308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1205161308 is an abundant number, since it is smaller than the sum of its proper divisors (2178215892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205161308 is a wasteful number, since it uses less digits than its factorization.

1205161308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66068 (or 66047 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1205161308 is about 34715.4332826194. The cubic root of 1205161308 is about 1064.1799201555.

Adding to 1205161308 its reverse (8031615021), we get a palindrome (9236776329).

The spelling of 1205161308 in words is "one billion, two hundred five million, one hundred sixty-one thousand, three hundred eight".