1205215353 has 12 divisors (see below), whose sum is σ = 1832491440. Its totient is φ = 761188536.

The previous prime is 1205215351. The next prime is 1205215373. The reversal of 1205215353 is 3535125021.

It is a happy number.

1205215353 is a `hidden beast` number, since 120 + 5 + 2 + 1 + 535 + 3 = 666.

It is not a de Polignac number, because 1205215353 - 2¹ = 1205215351 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1205215351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3523851 + ... + 3524192.

It is an arithmetic number, because the mean of its divisors is an integer number (152707620).

Almost surely, 2^1205215353 is an apocalyptic number.

It is an amenable number.

1205215353 is a deficient number, since it is larger than the sum of its proper divisors (627276087).

1205215353 is a wasteful number, since it uses less digits than its factorization.

1205215353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048068 (or 7048065 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1205215353 is about 34716.2116740868. The cubic root of 1205215353 is about 1064.1958274988.

The spelling of 1205215353 in words is "one billion, two hundred five million, two hundred fifteen thousand, three hundred fifty-three".