1213354445 has 16 divisors (see below), whose sum is σ = 1468824192. Its totient is φ = 962189760.

The previous prime is 1213354433. The next prime is 1213354463. The reversal of 1213354445 is 5444533121.

It is not a de Polignac number, because 1213354445 - 2⁸ = 1213354189 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 275279 + ... + 279651.

It is an arithmetic number, because the mean of its divisors is an integer number (91801512).

Almost surely, 2^1213354445 is an apocalyptic number.

It is an amenable number.

1213354445 is a deficient number, since it is larger than the sum of its proper divisors (255469747).

1213354445 is a wasteful number, since it uses less digits than its factorization.

1213354445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852.

The product of its digits is 28800, while the sum is 32.

The square root of 1213354445 is about 34833.2376473965. The cubic root of 1213354445 is about 1066.5860400755.

Adding to 1213354445 its reverse (5444533121), we get a palindrome (6657887566).

The spelling of 1213354445 in words is "one billion, two hundred thirteen million, three hundred fifty-four thousand, four hundred forty-five".