1645342284 has 12 divisors (see below), whose sum is σ = 3839132024. Its totient is φ = 548447424.

The previous prime is 1645342271. The next prime is 1645342333. The reversal of 1645342284 is 4822435461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 68555917 + ... + 68555940.

Almost surely, 2^1645342284 is an apocalyptic number.

It is an amenable number.

1645342284 is an abundant number, since it is smaller than the sum of its proper divisors (2193789740).

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

1645342284 is a wasteful number, since it uses less digits than its factorization.

1645342284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137111864 (or 137111862 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 1645342284 is about 40562.8189848783. The cubic root of 1645342284 is about 1180.5528109756.

The spelling of 1645342284 in words is "one billion, six hundred forty-five million, three hundred forty-two thousand, two hundred eighty-four".