1645164395692 has 24 divisors (see below), whose sum is σ = 2984236063200. Its totient is φ = 792638305536.

The previous prime is 1645164395597. The next prime is 1645164395713. The reversal of 1645164395692 is 2965934615461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1645164395692.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14039517 + ... + 14156212.

It is an arithmetic number, because the mean of its divisors is an integer number (124343169300).

Almost surely, 2^{1645164395692} is an apocalyptic number.

It is an amenable number.

1645164395692 is a deficient number, since it is larger than the sum of its proper divisors (1339071667508).

1645164395692 is a wasteful number, since it uses less digits than its factorization.

1645164395692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28196265 (or 28196263 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 61.

The spelling of 1645164395692 in words is "one trillion, six hundred forty-five billion, one hundred sixty-four million, three hundred ninety-five thousand, six hundred ninety-two".