819662412 has 48 divisors (see below), whose sum is σ = 2027162592. Its totient is φ = 256880640.

The previous prime is 819662407. The next prime is 819662423. The reversal of 819662412 is 214266918.

It is a super-3 number, since 3×819662412³ (a number of 28 digits) contains 333 as substring.

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, 300768 + ... + 303480.

It is an arithmetic number, because the mean of its divisors is an integer number (42232554).

Almost surely, 2^819662412 is an apocalyptic number.

It is an amenable number.

819662412 is an abundant number, since it is smaller than the sum of its proper divisors (1207500180).

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

819662412 is a wasteful number, since it uses less digits than its factorization.

819662412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218 (or 4216 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 819662412 is about 28629.7469775756. The cubic root of 819662412 is about 935.8616979162.

The spelling of 819662412 in words is "eight hundred nineteen million, six hundred sixty-two thousand, four hundred twelve".