2009186834 has 8 divisors (see below), whose sum is σ = 3015803340. Its totient is φ = 1003919056.

The previous prime is 2009186831. The next prime is 2009186843. The reversal of 2009186834 is 4386819002.

It can be written as a sum of positive squares in 2 ways, for example, as 1823546209 + 185640625 = 42703^2 + 13625^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2009186791 and 2009186800.

It is not an unprimeable number, because it can be changed into a prime (2009186831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333449 + ... + 339420.

Almost surely, 2^2009186834 is an apocalyptic number.

2009186834 is a deficient number, since it is larger than the sum of its proper divisors (1006616506).

2009186834 is a wasteful number, since it uses less digits than its factorization.

2009186834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674364.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2009186834 is about 44823.9537970492. The cubic root of 2009186834 is about 1261.8472179239.

The spelling of 2009186834 in words is "two billion, nine million, one hundred eighty-six thousand, eight hundred thirty-four".