1646651676 has 96 divisors (see below), whose sum is σ = 4104898560. Its totient is φ = 512870400.

The previous prime is 1646651659. The next prime is 1646651681. The reversal of 1646651676 is 6761566461.

It is a super-2 number, since 2×1646651676² = 5422923484147217952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1631460 + ... + 1632468.

It is an arithmetic number, because the mean of its divisors is an integer number (42759360).

Almost surely, 2^1646651676 is an apocalyptic number.

It is an amenable number.

1646651676 is an abundant number, since it is smaller than the sum of its proper divisors (2458246884).

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

1646651676 is a wasteful number, since it uses less digits than its factorization.

1646651676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1193 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 1646651676 is about 40578.9560733147. The cubic root of 1646651676 is about 1180.8658960892.

The spelling of 1646651676 in words is "one billion, six hundred forty-six million, six hundred fifty-one thousand, six hundred seventy-six".