1213546304 has 14 divisors (see below), whose sum is σ = 2408131074. Its totient is φ = 606773120.

The previous prime is 1213546289. The next prime is 1213546333. The reversal of 1213546304 is 4036453121.

It can be written as a sum of positive squares in only one way, i.e., 1197160000 + 16386304 = 34600^2 + 4048^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9480767 + ... + 9480894.

Almost surely, 2^1213546304 is an apocalyptic number.

It is an amenable number.

1213546304 is a deficient number, since it is larger than the sum of its proper divisors (1194584770).

1213546304 is an equidigital number, since it uses as much as digits as its factorization.

1213546304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18961673 (or 18961663 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1213546304 is about 34835.9915030418. The cubic root of 1213546304 is about 1066.6422543024.

Adding to 1213546304 its reverse (4036453121), we get a palindrome (5249999425).

The spelling of 1213546304 in words is "one billion, two hundred thirteen million, five hundred forty-six thousand, three hundred four".