1645299796 has 12 divisors (see below), whose sum is σ = 3290599648. Its totient is φ = 705128472.

The previous prime is 1645299751. The next prime is 1645299811. The reversal of 1645299796 is 6979925461.

1645299796 is an admirable number.

It is a super-2 number, since 2×1645299796² = 5414022837435283232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1645299796.

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, 29380326 + ... + 29380381.

Almost surely, 2^1645299796 is an apocalyptic number.

It is an amenable number.

1645299796 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1645299796 is a wasteful number, since it uses less digits than its factorization.

1645299796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58760718 (or 58760716 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 58.

The square root of 1645299796 is about 40562.2952506389. The cubic root of 1645299796 is about 1180.5426490050.

The spelling of 1645299796 in words is "one billion, six hundred forty-five million, two hundred ninety-nine thousand, seven hundred ninety-six".