819305673490 has 16 divisors (see below), whose sum is σ = 1475042970240. Its totient is φ = 327657212080.

The previous prime is 819305673457. The next prime is 819305673491. The reversal of 819305673490 is 94376503918.

819305673490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×819305673490² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (819305673491) 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, 8079256 + ... + 8180035.

It is an arithmetic number, because the mean of its divisors is an integer number (92190185640).

Almost surely, 2^819305673490 is an apocalyptic number.

819305673490 is a deficient number, since it is larger than the sum of its proper divisors (655737296750).

819305673490 is a wasteful number, since it uses less digits than its factorization.

819305673490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16264337.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 819305673490 in words is "eight hundred nineteen billion, three hundred five million, six hundred seventy-three thousand, four hundred ninety".