1646811332 has 6 divisors (see below), whose sum is σ = 2881919838. Its totient is φ = 823405664.

The previous prime is 1646811319. The next prime is 1646811343. The reversal of 1646811332 is 2331186461.

It can be written as a sum of positive squares in only one way, i.e., 1277633536 + 369177796 = 35744^2 + 19214^2 .

It is a super-2 number, since 2×1646811332² = 5423975126407228448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1646811292 and 1646811301.

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 as a sum of consecutive naturals, namely, 205851413 + ... + 205851420.

It is an arithmetic number, because the mean of its divisors is an integer number (480319973).

Almost surely, 2^1646811332 is an apocalyptic number.

It is an amenable number.

1646811332 is a deficient number, since it is larger than the sum of its proper divisors (1235108506).

1646811332 is a wasteful number, since it uses less digits than its factorization.

1646811332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411702837 (or 411702835 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1646811332 is about 40580.9232521883. The cubic root of 1646811332 is about 1180.9040596416.

Adding to 1646811332 its reverse (2331186461), we get a palindrome (3977997793).

The spelling of 1646811332 in words is "one billion, six hundred forty-six million, eight hundred eleven thousand, three hundred thirty-two".