2193876809 has 8 divisors (see below), whose sum is σ = 2325947400. Its totient is φ = 2062141696.

The previous prime is 2193876793. The next prime is 2193876863. The reversal of 2193876809 is 9086783912.

It can be written as a sum of positive squares in 4 ways, for example, as 198021184 + 1995855625 = 14072^2 + 44675^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2193876809 - 2⁴ = 2193876793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193878809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70334 + ... + 96615.

It is an arithmetic number, because the mean of its divisors is an integer number (290743425).

Almost surely, 2^2193876809 is an apocalyptic number.

It is an amenable number.

2193876809 is a deficient number, since it is larger than the sum of its proper divisors (132070591).

2193876809 is a wasteful number, since it uses less digits than its factorization.

2193876809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167739.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 2193876809 is about 46838.8386811629. The cubic root of 2193876809 is about 1299.3836938628.

The spelling of 2193876809 in words is "two billion, one hundred ninety-three million, eight hundred seventy-six thousand, eight hundred nine".