1645032484 has 48 divisors (see below), whose sum is σ = 3024609280. Its totient is φ = 781915680.

The previous prime is 1645032461. The next prime is 1645032491. The reversal of 1645032484 is 4842305461.

It is a super-2 number, since 2×1645032484² = 5412263746830420512, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3007099 + ... + 3007645.

Almost surely, 2^1645032484 is an apocalyptic number.

It is an amenable number.

1645032484 is a deficient number, since it is larger than the sum of its proper divisors (1379576796).

1645032484 is a wasteful number, since it uses less digits than its factorization.

1645032484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 1645032484 is about 40559.0000369832. Note that the first 4 decimals coincide. The cubic root of 1645032484 is about 1180.4787112535.

The spelling of 1645032484 in words is "one billion, six hundred forty-five million, thirty-two thousand, four hundred eighty-four".