161164213 has 8 divisors (see below), whose sum is σ = 193881920. Its totient is φ = 130870080.

The previous prime is 161164207. The next prime is 161164219. The reversal of 161164213 is 312461161.

It is an interprime number because it is at equal distance from previous prime (161164207) and next prime (161164219).

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 161164213 - 2⁵ = 161164181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161164219) 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, 605748 + ... + 606013.

It is an arithmetic number, because the mean of its divisors is an integer number (24235240).

Almost surely, 2^161164213 is an apocalyptic number.

It is an amenable number.

161164213 is a deficient number, since it is larger than the sum of its proper divisors (32717707).

161164213 is a wasteful number, since it uses less digits than its factorization.

161164213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211787.

The product of its digits is 864, while the sum is 25.

The square root of 161164213 is about 12695.0467899886. The cubic root of 161164213 is about 544.1970759525.

The spelling of 161164213 in words is "one hundred sixty-one million, one hundred sixty-four thousand, two hundred thirteen".