141818891 has 8 divisors (see below), whose sum is σ = 145806000. Its totient is φ = 137839968.

The previous prime is 141818867. The next prime is 141818917. The reversal of 141818891 is 198818141.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 141818891 - 2⁶ = 141818827 is a prime.

It is a super-2 number, since 2×141818891² = 40225195688939762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141818801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54185 + ... + 56741.

It is an arithmetic number, because the mean of its divisors is an integer number (18225750).

Almost surely, 2^141818891 is an apocalyptic number.

141818891 is a deficient number, since it is larger than the sum of its proper divisors (3987109).

141818891 is a wasteful number, since it uses less digits than its factorization.

141818891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093.

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

The square root of 141818891 is about 11908.7736984124. The cubic root of 141818891 is about 521.4884511133.

The spelling of 141818891 in words is "one hundred forty-one million, eight hundred eighteen thousand, eight hundred ninety-one".