141988181 has 4 divisors (see below), whose sum is σ = 142363200. Its totient is φ = 141613164.

The previous prime is 141988163. The next prime is 141988211. The reversal of 141988181 is 181889141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 181889141 = 7 ⋅25984163.

It is a cyclic number.

It is not a de Polignac number, because 141988181 - 2⁶ = 141988117 is a prime.

It is a super-2 number, since 2×141988181² = 40321287087377522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141988111) 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, 186941 + ... + 187698.

It is an arithmetic number, because the mean of its divisors is an integer number (35590800).

Almost surely, 2^141988181 is an apocalyptic number.

It is an amenable number.

141988181 is a deficient number, since it is larger than the sum of its proper divisors (375019).

141988181 is an equidigital number, since it uses as much as digits as its factorization.

141988181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375018.

The product of its digits is 18432, while the sum is 41.

The square root of 141988181 is about 11915.8793632698. The cubic root of 141988181 is about 521.6958698256.

The spelling of 141988181 in words is "one hundred forty-one million, nine hundred eighty-eight thousand, one hundred eighty-one".