1205523364 has 12 divisors (see below), whose sum is σ = 2112805324. Its totient is φ = 601864704.

The previous prime is 1205523349. The next prime is 1205523373. The reversal of 1205523364 is 4633255021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 923552100 + 281971264 = 30390^2 + 16792^2 .

It is a super-2 number, since 2×1205523364² = 2906573162299752992, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 221217 + ... + 226600.

Almost surely, 2^1205523364 is an apocalyptic number.

It is an amenable number.

1205523364 is a deficient number, since it is larger than the sum of its proper divisors (907281960).

1205523364 is a wasteful number, since it uses less digits than its factorization.

1205523364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448494 (or 448492 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1205523364 is about 34720.6475170035. The cubic root of 1205523364 is about 1064.2864768866.

Adding to 1205523364 its reverse (4633255021), we get a palindrome (5838778385).

The spelling of 1205523364 in words is "one billion, two hundred five million, five hundred twenty-three thousand, three hundred sixty-four".