161133141 has 16 divisors (see below), whose sum is σ = 233424576. Its totient is φ = 98278656.

The previous prime is 161133131. The next prime is 161133149. The reversal of 161133141 is 141331161.

161133141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161133141 - 2¹⁰ = 161132117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161133149) 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, 13875 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (14589036).

Almost surely, 2^161133141 is an apocalyptic number.

It is an amenable number.

161133141 is a deficient number, since it is larger than the sum of its proper divisors (72291435).

161133141 is a wasteful number, since it uses less digits than its factorization.

161133141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36692.

The product of its digits is 216, while the sum is 21.

The square root of 161133141 is about 12693.8229466146. The cubic root of 161133141 is about 544.1621004906.

The spelling of 161133141 in words is "one hundred sixty-one million, one hundred thirty-three thousand, one hundred forty-one".