1646811334 has 32 divisors (see below), whose sum is σ = 2892510720. Its totient is φ = 688468032.

The previous prime is 1646811319. The next prime is 1646811343. The reversal of 1646811334 is 4331186461.

It is a junction number, because it is equal to n+sod(n) for n = 1646811293 and 1646811302.

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, 678447 + ... + 680869.

It is an arithmetic number, because the mean of its divisors is an integer number (90390960).

Almost surely, 2^1646811334 is an apocalyptic number.

1646811334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1646811334 is a deficient number, since it is larger than the sum of its proper divisors (1245699386).

1646811334 is a wasteful number, since it uses less digits than its factorization.

1646811334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604.

The product of its digits is 41472, while the sum is 37.

The square root of 1646811334 is about 40580.9232768305. The cubic root of 1646811334 is about 1180.9040601196.

Adding to 1646811334 its reverse (4331186461), we get a palindrome (5977997795).

The spelling of 1646811334 in words is "one billion, six hundred forty-six million, eight hundred eleven thousand, three hundred thirty-four".