190809563049 has 24 divisors (see below), whose sum is σ = 315894995520. Its totient is φ = 108719804448.

The previous prime is 190809563047. The next prime is 190809563053. The reversal of 190809563049 is 940365908091.

It is not a de Polignac number, because 190809563049 - 2¹ = 190809563047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190809562986 and 190809563004.

It is not an unprimeable number, because it can be changed into a prime (190809563047) 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, 4342294 + ... + 4386015.

It is an arithmetic number, because the mean of its divisors is an integer number (13162291480).

Almost surely, 2^190809563049 is an apocalyptic number.

It is an amenable number.

190809563049 is a deficient number, since it is larger than the sum of its proper divisors (125085432471).

190809563049 is a wasteful number, since it uses less digits than its factorization.

190809563049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728669 (or 8728666 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 190809563049 in words is "one hundred ninety billion, eight hundred nine million, five hundred sixty-three thousand, forty-nine".