1213260445 has 8 divisors (see below), whose sum is σ = 1456416000. Its totient is φ = 970272720.

The previous prime is 1213260439. The next prime is 1213260467. The reversal of 1213260445 is 5440623121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213260445 - 2⁵ = 1213260413 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 25461 + ... + 55450.

It is an arithmetic number, because the mean of its divisors is an integer number (182052000).

Almost surely, 2^1213260445 is an apocalyptic number.

It is an amenable number.

1213260445 is a deficient number, since it is larger than the sum of its proper divisors (243155555).

1213260445 is an equidigital number, since it uses as much as digits as its factorization.

1213260445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83915.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1213260445 is about 34831.8883352597. Note that the first 3 decimals coincide. The cubic root of 1213260445 is about 1066.5584961380.

Adding to 1213260445 its reverse (5440623121), we get a palindrome (6653883566).

The spelling of 1213260445 in words is "one billion, two hundred thirteen million, two hundred sixty thousand, four hundred forty-five".