205161954 has 8 divisors (see below), whose sum is σ = 410323920. Its totient is φ = 68387316.

The previous prime is 205161949. The next prime is 205161959. The reversal of 205161954 is 459161502.

It is an interprime number because it is at equal distance from previous prime (205161949) and next prime (205161959).

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

205161954 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (205161959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17096824 + ... + 17096835.

It is an arithmetic number, because the mean of its divisors is an integer number (51290490).

Almost surely, 2^205161954 is an apocalyptic number.

205161954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205161954 is a wasteful number, since it uses less digits than its factorization.

205161954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34193664.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 205161954 is about 14323.4756256992. The cubic root of 205161954 is about 589.7920879982.

The spelling of 205161954 in words is "two hundred five million, one hundred sixty-one thousand, nine hundred fifty-four".