143838813 has 8 divisors (see below), whose sum is σ = 192550176. Its totient is φ = 95510000.

The previous prime is 143838769. The next prime is 143838823. The reversal of 143838813 is 318838341.

143838813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 143838813 - 2⁸ = 143838557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143838823) 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, 94758 + ... + 96263.

It is an arithmetic number, because the mean of its divisors is an integer number (24068772).

Almost surely, 2^143838813 is an apocalyptic number.

It is an amenable number.

143838813 is a deficient number, since it is larger than the sum of its proper divisors (48711363).

143838813 is a wasteful number, since it uses less digits than its factorization.

143838813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191275.

The product of its digits is 55296, while the sum is 39.

The square root of 143838813 is about 11993.2819945168. The cubic root of 143838813 is about 523.9526366393.

The spelling of 143838813 in words is "one hundred forty-three million, eight hundred thirty-eight thousand, eight hundred thirteen".