1645652316 has 48 divisors (see below), whose sum is σ = 4787354880. Its totient is φ = 427441920.

The previous prime is 1645652311. The next prime is 1645652347. The reversal of 1645652316 is 6132565461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645652311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889581 + ... + 891428.

It is an arithmetic number, because the mean of its divisors is an integer number (99736560).

Almost surely, 2^1645652316 is an apocalyptic number.

It is an amenable number.

1645652316 is an abundant number, since it is smaller than the sum of its proper divisors (3141702564).

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

1645652316 is a wasteful number, since it uses less digits than its factorization.

1645652316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781034 (or 1781032 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 1645652316 is about 40566.6404327497. The cubic root of 1645652316 is about 1180.6269568774.

The spelling of 1645652316 in words is "one billion, six hundred forty-five million, six hundred fifty-two thousand, three hundred sixteen".