20161158 has 16 divisors (see below), whose sum is σ = 40376880. Its totient is φ = 6711296.

The previous prime is 20161157. The next prime is 20161199. The reversal of 20161158 is 85116102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20161151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3766 + ... + 7382.

It is an arithmetic number, because the mean of its divisors is an integer number (2523555).

Almost surely, 2^20161158 is an apocalyptic number.

20161158 is an abundant number, since it is smaller than the sum of its proper divisors (20215722).

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

20161158 is a wasteful number, since it uses less digits than its factorization.

20161158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 20161158 is about 4490.1178158262. The cubic root of 20161158 is about 272.1688956089.

The spelling of 20161158 in words is "twenty million, one hundred sixty-one thousand, one hundred fifty-eight".