119918161 has 16 divisors (see below), whose sum is σ = 135898560. Its totient is φ = 104816320.

The previous prime is 119918089. The next prime is 119918167. The reversal of 119918161 is 161819911.

It is a cyclic number.

It is not a de Polignac number, because 119918161 - 2²¹ = 117821009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 119918161.

It is not an unprimeable number, because it can be changed into a prime (119918167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92826 + ... + 94108.

It is an arithmetic number, because the mean of its divisors is an integer number (8493660).

Almost surely, 2^119918161 is an apocalyptic number.

119918161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

119918161 is a deficient number, since it is larger than the sum of its proper divisors (15980399).

119918161 is a wasteful number, since it uses less digits than its factorization.

119918161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616.

The product of its digits is 3888, while the sum is 37.

The square root of 119918161 is about 10950.7150908057. The cubic root of 119918161 is about 493.1302602939.

The spelling of 119918161 in words is "one hundred nineteen million, nine hundred eighteen thousand, one hundred sixty-one".