1205332812 has 30 divisors (see below), whose sum is σ = 3150978908. Its totient is φ = 401777496.

The previous prime is 1205332787. The next prime is 1205332847. The reversal of 1205332812 is 2182335021.

1205332812 is a `hidden beast` number, since 120 + 533 + 2 + 8 + 1 + 2 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

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 9 ways as a sum of consecutive naturals, for example, 1859758 + ... + 1860405.

Almost surely, 2^1205332812 is an apocalyptic number.

1205332812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1205332812 is an abundant number, since it is smaller than the sum of its proper divisors (1945646096).

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

1205332812 is a wasteful number, since it uses less digits than its factorization.

1205332812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720179 (or 3720168 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1205332812 is about 34717.9033353110. The cubic root of 1205332812 is about 1064.2303981717.

Adding to 1205332812 its reverse (2182335021), we get a palindrome (3387667833).

The spelling of 1205332812 in words is "one billion, two hundred five million, three hundred thirty-two thousand, eight hundred twelve".