819641676 has 48 divisors (see below), whose sum is σ = 2188126976. Its totient is φ = 233924544.

The previous prime is 819641671. The next prime is 819641677. The reversal of 819641676 is 676146918.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (819641671) 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, 78855 + ... + 88641.

Almost surely, 2^819641676 is an apocalyptic number.

It is an amenable number.

819641676 is an abundant number, since it is smaller than the sum of its proper divisors (1368485300).

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

819641676 is a wasteful number, since it uses less digits than its factorization.

819641676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10798 (or 10796 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 819641676 is about 28629.3848344668. The cubic root of 819641676 is about 935.8538059713.

The spelling of 819641676 in words is "eight hundred nineteen million, six hundred forty-one thousand, six hundred seventy-six".