238343851 has 2 divisors, whose sum is σ = 238343852. Its totient is φ = 238343850.

The previous prime is 238343843. The next prime is 238343863. The reversal of 238343851 is 158343832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238343851 - 2³ = 238343843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238343851.

It is not a weakly prime, because it can be changed into another prime (238343051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119171925 + 119171926.

It is an arithmetic number, because the mean of its divisors is an integer number (119171926).

Almost surely, 2^238343851 is an apocalyptic number.

238343851 is a deficient number, since it is larger than the sum of its proper divisors (1).

238343851 is an equidigital number, since it uses as much as digits as its factorization.

238343851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 238343851 is about 15438.3888731953. The cubic root of 238343851 is about 620.0137449259.

The spelling of 238343851 in words is "two hundred thirty-eight million, three hundred forty-three thousand, eight hundred fifty-one".