1645011224 has 8 divisors (see below), whose sum is σ = 3084396060. Its totient is φ = 822505608.

The previous prime is 1645011223. The next prime is 1645011227. The reversal of 1645011224 is 4221105461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1645011193 and 1645011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102813194 + ... + 102813209.

Almost surely, 2^1645011224 is an apocalyptic number.

It is an amenable number.

1645011224 is a deficient number, since it is larger than the sum of its proper divisors (1439384836).

1645011224 is a wasteful number, since it uses less digits than its factorization.

1645011224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205626409 (or 205626405 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1645011224 is about 40558.7379488070. The cubic root of 1645011224 is about 1180.4736258249.

Adding to 1645011224 its reverse (4221105461), we get a palindrome (5866116685).

The spelling of 1645011224 in words is "one billion, six hundred forty-five million, eleven thousand, two hundred twenty-four".