1646545052 has 24 divisors (see below), whose sum is σ = 2898954240. Its totient is φ = 818287920.

The previous prime is 1646545039. The next prime is 1646545057. The reversal of 1646545052 is 2505456461.

It is a super-2 number, since 2×1646545052² = 5422221216531365408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1646544997 and 1646545015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646545057) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 526349 + ... + 529467.

It is an arithmetic number, because the mean of its divisors is an integer number (120789760).

Almost surely, 2^1646545052 is an apocalyptic number.

It is an amenable number.

1646545052 is a deficient number, since it is larger than the sum of its proper divisors (1252409188).

1646545052 is a wasteful number, since it uses less digits than its factorization.

1646545052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881 (or 3879 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 1646545052 is about 40577.6422676330. The cubic root of 1646545052 is about 1180.8404077269.

The spelling of 1646545052 in words is "one billion, six hundred forty-six million, five hundred forty-five thousand, fifty-two".