1645341532 has 48 divisors (see below), whose sum is σ = 3138549120. Its totient is φ = 751795200.

The previous prime is 1645341517. The next prime is 1645341569. The reversal of 1645341532 is 2351435461.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325182 + ... + 330202.

It is an arithmetic number, because the mean of its divisors is an integer number (65386440).

Almost surely, 2^1645341532 is an apocalyptic number.

It is an amenable number.

1645341532 is a deficient number, since it is larger than the sum of its proper divisors (1493207588).

1645341532 is a wasteful number, since it uses less digits than its factorization.

1645341532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5182 (or 5180 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 1645341532 is about 40562.8097153045. The cubic root of 1645341532 is about 1180.5526311192.

Adding to 1645341532 its reverse (2351435461), we get a palindrome (3996776993).

The spelling of 1645341532 in words is "one billion, six hundred forty-five million, three hundred forty-one thousand, five hundred thirty-two".