238723193057 has 2 divisors, whose sum is σ = 238723193058. Its totient is φ = 238723193056.

The previous prime is 238723193021. The next prime is 238723193101. The reversal of 238723193057 is 750391327832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238721165281 + 2027776 = 488591^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 238723193057 - 2²⁶ = 238656084193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238723192996 and 238723193014.

It is not a weakly prime, because it can be changed into another prime (238723193257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119361596528 + 119361596529.

It is an arithmetic number, because the mean of its divisors is an integer number (119361596529).

Almost surely, 2^238723193057 is an apocalyptic number.

It is an amenable number.

238723193057 is a deficient number, since it is larger than the sum of its proper divisors (1).

238723193057 is an equidigital number, since it uses as much as digits as its factorization.

238723193057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 238723193057 in words is "two hundred thirty-eight billion, seven hundred twenty-three million, one hundred ninety-three thousand, fifty-seven".