1645051224 has 16 divisors (see below), whose sum is σ = 4112628120. Its totient is φ = 548350400.

The previous prime is 1645051171. The next prime is 1645051267. The reversal of 1645051224 is 4221505461.

It is a junction number, because it is equal to n+sod(n) for n = 1645051191 and 1645051200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34271877 + ... + 34271924.

Almost surely, 2^1645051224 is an apocalyptic number.

It is an amenable number.

1645051224 is an abundant number, since it is smaller than the sum of its proper divisors (2467576896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645051224 is a wasteful number, since it uses less digits than its factorization.

1645051224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68543810 (or 68543806 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1645051224 is about 40559.2310577999. The cubic root of 1645051224 is about 1180.4831938574.

Adding to 1645051224 its reverse (4221505461), we get a palindrome (5866556685).

The spelling of 1645051224 in words is "one billion, six hundred forty-five million, fifty-one thousand, two hundred twenty-four".