820159430 has 8 divisors (see below), whose sum is σ = 1476286992. Its totient is φ = 328063768.

The previous prime is 820159421. The next prime is 820159463. The reversal of 820159430 is 34951028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×820159430² = 1345322981235849800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41007962 + ... + 41007981.

It is an arithmetic number, because the mean of its divisors is an integer number (184535874).

Almost surely, 2^820159430 is an apocalyptic number.

820159430 is a deficient number, since it is larger than the sum of its proper divisors (656127562).

820159430 is a wasteful number, since it uses less digits than its factorization.

820159430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82015950.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 820159430 is about 28638.4257598074. The cubic root of 820159430 is about 936.0508189164.

The spelling of 820159430 in words is "eight hundred twenty million, one hundred fifty-nine thousand, four hundred thirty".