819476140 has 48 divisors (see below), whose sum is σ = 1968567552. Its totient is φ = 280702656.

The previous prime is 819476117. The next prime is 819476153. The reversal of 819476140 is 41674918.

It is a super-2 number, since 2×819476140² = 1343082288058599200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 819476093 and 819476102.

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, 205647 + ... + 209593.

It is an arithmetic number, because the mean of its divisors is an integer number (41011824).

Almost surely, 2^819476140 is an apocalyptic number.

It is an amenable number.

819476140 is an abundant number, since it is smaller than the sum of its proper divisors (1149091412).

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

819476140 is a wasteful number, since it uses less digits than its factorization.

819476140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5446 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 819476140 is about 28626.4936728199. The cubic root of 819476140 is about 935.7907996070.

The spelling of 819476140 in words is "eight hundred nineteen million, four hundred seventy-six thousand, one hundred forty".