809452257190 has 16 divisors (see below), whose sum is σ = 1458311513328. Its totient is φ = 323492580576.

The previous prime is 809452257179. The next prime is 809452257217. The reversal of 809452257190 is 91752254908.

It is a super-2 number, since 2×809452257190² (a number of 25 digits) 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 7 ways as a sum of consecutive naturals, for example, 36028497 + ... + 36050956.

It is an arithmetic number, because the mean of its divisors is an integer number (91144469583).

Almost surely, 2^809452257190 is an apocalyptic number.

809452257190 is a deficient number, since it is larger than the sum of its proper divisors (648859256138).

809452257190 is a wasteful number, since it uses less digits than its factorization.

809452257190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72080583.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 809452257190 in words is "eight hundred nine billion, four hundred fifty-two million, two hundred fifty-seven thousand, one hundred ninety".