819395220462 has 48 divisors (see below), whose sum is σ = 2052990232272. Its totient is φ = 216104232960.

The previous prime is 819395220461. The next prime is 819395220491. The reversal of 819395220462 is 264022593918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819395220461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107190739 + ... + 107198382.

It is an arithmetic number, because the mean of its divisors is an integer number (42770629839).

Almost surely, 2^819395220462 is an apocalyptic number.

819395220462 is an abundant number, since it is smaller than the sum of its proper divisors (1233595011810).

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

819395220462 is a wasteful number, since it uses less digits than its factorization.

819395220462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214389153 (or 214389146 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 819395220462 in words is "eight hundred nineteen billion, three hundred ninety-five million, two hundred twenty thousand, four hundred sixty-two".