809155082 has 4 divisors (see below), whose sum is σ = 1213732626. Its totient is φ = 404577540.

The previous prime is 809155031. The next prime is 809155091. The reversal of 809155082 is 280551908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 750157321 + 58997761 = 27389^2 + 7681^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202288769 + ... + 202288772.

Almost surely, 2^809155082 is an apocalyptic number.

809155082 is a deficient number, since it is larger than the sum of its proper divisors (404577544).

809155082 is a wasteful number, since it uses less digits than its factorization.

809155082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404577543.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 809155082 is about 28445.6513723979. The cubic root of 809155082 is about 931.8455209160.

The spelling of 809155082 in words is "eight hundred nine million, one hundred fifty-five thousand, eighty-two".