819471972 has 24 divisors (see below), whose sum is σ = 2085928992. Its totient is φ = 248324800.

The previous prime is 819471959. The next prime is 819471979. The reversal of 819471972 is 279174918.

It is not an unprimeable number, because it can be changed into a prime (819471979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3103929 + ... + 3104192.

It is an arithmetic number, because the mean of its divisors is an integer number (86913708).

Almost surely, 2^819471972 is an apocalyptic number.

It is an amenable number.

819471972 is an abundant number, since it is smaller than the sum of its proper divisors (1266457020).

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

819471972 is a wasteful number, since it uses less digits than its factorization.

819471972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6208139 (or 6208137 counting only the distinct ones).

The product of its digits is 254016, while the sum is 48.

The square root of 819471972 is about 28626.4208730327. The cubic root of 819471972 is about 935.7892130721.

The spelling of 819471972 in words is "eight hundred nineteen million, four hundred seventy-one thousand, nine hundred seventy-two".