141631818 has 16 divisors (see below), whose sum is σ = 283533696. Its totient is φ = 47165600.

The previous prime is 141631817. The next prime is 141631823. The reversal of 141631818 is 818136141.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (141631817) 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, 4083 + ... + 17318.

It is an arithmetic number, because the mean of its divisors is an integer number (17720856).

Almost surely, 2^141631818 is an apocalyptic number.

141631818 is an abundant number, since it is smaller than the sum of its proper divisors (141901878).

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

141631818 is a wasteful number, since it uses less digits than its factorization.

141631818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22509.

The product of its digits is 4608, while the sum is 33.

The square root of 141631818 is about 11900.9166873817. The cubic root of 141631818 is about 521.2590521118.

Adding to 141631818 its reverse (818136141), we get a palindrome (959767959).

The spelling of 141631818 in words is "one hundred forty-one million, six hundred thirty-one thousand, eight hundred eighteen".