1205452513 has 4 divisors (see below), whose sum is σ = 1207111360. Its totient is φ = 1203793668.

The previous prime is 1205452499. The next prime is 1205452529. The reversal of 1205452513 is 3152545021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1205452513 - 2⁵ = 1205452481 is a prime.

It is a super-2 number, since 2×1205452513² = 2906231522196030338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205452553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 828333 + ... + 829786.

It is an arithmetic number, because the mean of its divisors is an integer number (301777840).

Almost surely, 2^1205452513 is an apocalyptic number.

It is an amenable number.

1205452513 is a deficient number, since it is larger than the sum of its proper divisors (1658847).

1205452513 is an equidigital number, since it uses as much as digits as its factorization.

1205452513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658846.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1205452513 is about 34719.6272013396. The cubic root of 1205452513 is about 1064.2656264021.

Adding to 1205452513 its reverse (3152545021), we get a palindrome (4357997534).

The spelling of 1205452513 in words is "one billion, two hundred five million, four hundred fifty-two thousand, five hundred thirteen".