1204621445 has 16 divisors (see below), whose sum is σ = 1545743088. Its totient is φ = 898022400.

The previous prime is 1204621441. The next prime is 1204621477. The reversal of 1204621445 is 5441264021.

It can be written as a sum of positive squares in 8 ways, for example, as 507555841 + 697065604 = 22529^2 + 26402^2 .

It is not a de Polignac number, because 1204621445 - 2² = 1204621441 is a prime.

It is a super-2 number, since 2×1204621445² = 2902225651507776050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204621441) by changing a digit.

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, 61574 + ... + 78743.

It is an arithmetic number, because the mean of its divisors is an integer number (96608943).

Almost surely, 2^1204621445 is an apocalyptic number.

It is an amenable number.

1204621445 is a deficient number, since it is larger than the sum of its proper divisors (341121643).

1204621445 is a wasteful number, since it uses less digits than its factorization.

1204621445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140440.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1204621445 is about 34707.6568641561. The cubic root of 1204621445 is about 1064.0209933884.

Adding to 1204621445 its reverse (5441264021), we get a palindrome (6645885466).

The spelling of 1204621445 in words is "one billion, two hundred four million, six hundred twenty-one thousand, four hundred forty-five".