238648174057 has 4 divisors (see below), whose sum is σ = 238650170836. Its totient is φ = 238646177280.

The previous prime is 238648174043. The next prime is 238648174067. The reversal of 238648174057 is 750471846832.

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 147914083216 + 90734090841 = 384596^2 + 301221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238648174057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238648173989 and 238648174007.

It is not an unprimeable number, because it can be changed into a prime (238648174067) 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, 806868 + ... + 1062229.

It is an arithmetic number, because the mean of its divisors is an integer number (59662542709).

Almost surely, 2^238648174057 is an apocalyptic number.

It is an amenable number.

238648174057 is a deficient number, since it is larger than the sum of its proper divisors (1996779).

238648174057 is a wasteful number, since it uses less digits than its factorization.

238648174057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996778.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 238648174057 in words is "two hundred thirty-eight billion, six hundred forty-eight million, one hundred seventy-four thousand, fifty-seven".