609983161 has 4 divisors (see below), whose sum is σ = 636504192. Its totient is φ = 583462132.

The previous prime is 609983149. The next prime is 609983173. The reversal of 609983161 is 161389906.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (609983149) and next prime (609983173).

It is a cyclic number.

It is not a de Polignac number, because 609983161 - 2²⁵ = 576428729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609983131) 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, 13260481 + ... + 13260526.

It is an arithmetic number, because the mean of its divisors is an integer number (159126048).

Almost surely, 2^609983161 is an apocalyptic number.

It is an amenable number.

609983161 is a deficient number, since it is larger than the sum of its proper divisors (26521031).

609983161 is a wasteful number, since it uses less digits than its factorization.

609983161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26521030.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 609983161 is about 24697.8371725137. The cubic root of 609983161 is about 848.0848049347.

The spelling of 609983161 in words is "six hundred nine million, nine hundred eighty-three thousand, one hundred sixty-one".