238968157 has 4 divisors (see below), whose sum is σ = 244525600. Its totient is φ = 233410716.

The previous prime is 238968139. The next prime is 238968193. The reversal of 238968157 is 751869832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238968157 - 2¹¹ = 238966109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238968157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238968857) 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, 2778657 + ... + 2778742.

It is an arithmetic number, because the mean of its divisors is an integer number (61131400).

Almost surely, 2^238968157 is an apocalyptic number.

It is an amenable number.

238968157 is a deficient number, since it is larger than the sum of its proper divisors (5557443).

238968157 is an equidigital number, since it uses as much as digits as its factorization.

238968157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557442.

The product of its digits is 725760, while the sum is 49.

The square root of 238968157 is about 15458.5949232134. The cubic root of 238968157 is about 620.5546173194.

The spelling of 238968157 in words is "two hundred thirty-eight million, nine hundred sixty-eight thousand, one hundred fifty-seven".