141809813 has 2 divisors, whose sum is σ = 141809814. Its totient is φ = 141809812.

The previous prime is 141809809. The next prime is 141809827. The reversal of 141809813 is 318908141.

141809813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107785924 + 34023889 = 10382^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 141809813 - 2² = 141809809 is a prime.

It is a super-2 number, since 2×141809813² = 40220046126189938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141809113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70904906 + 70904907.

It is an arithmetic number, because the mean of its divisors is an integer number (70904907).

Almost surely, 2^141809813 is an apocalyptic number.

It is an amenable number.

141809813 is a deficient number, since it is larger than the sum of its proper divisors (1).

141809813 is an equidigital number, since it uses as much as digits as its factorization.

141809813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 141809813 is about 11908.3925447560. The cubic root of 141809813 is about 521.4773238388.

The spelling of 141809813 in words is "one hundred forty-one million, eight hundred nine thousand, eight hundred thirteen".