243152893 has 4 divisors (see below), whose sum is σ = 247139068. Its totient is φ = 239166720.

The previous prime is 243152891. The next prime is 243152909. The reversal of 243152893 is 398251342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115304644 + 127848249 = 10738^2 + 11307^2 .

It is a cyclic number.

It is not a de Polignac number, because 243152893 - 2¹ = 243152891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243152891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1992996 + ... + 1993117.

It is an arithmetic number, because the mean of its divisors is an integer number (61784767).

Almost surely, 2^243152893 is an apocalyptic number.

It is an amenable number.

243152893 is a deficient number, since it is larger than the sum of its proper divisors (3986175).

243152893 is an equidigital number, since it uses as much as digits as its factorization.

243152893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986174.

The product of its digits is 51840, while the sum is 37.

The square root of 243152893 is about 15593.3605422308. The cubic root of 243152893 is about 624.1559961250.

The spelling of 243152893 in words is "two hundred forty-three million, one hundred fifty-two thousand, eight hundred ninety-three".