243857151 has 12 divisors (see below), whose sum is σ = 352396512. Its totient is φ = 162498336.

The previous prime is 243857113. The next prime is 243857177. The reversal of 243857151 is 151758342.

243857151 is a `hidden beast` number, since 2 + 4 + 38 + 571 + 51 = 666.

It is not a de Polignac number, because 243857151 - 2¹³ = 243848959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243857111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21715 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (29366376).

Almost surely, 2^243857151 is an apocalyptic number.

243857151 is a deficient number, since it is larger than the sum of its proper divisors (108539361).

243857151 is a wasteful number, since it uses less digits than its factorization.

243857151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12190 (or 12187 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 243857151 is about 15615.9261973154. The cubic root of 243857151 is about 624.7580085029.

The spelling of 243857151 in words is "two hundred forty-three million, eight hundred fifty-seven thousand, one hundred fifty-one".