238672691 has 2 divisors, whose sum is σ = 238672692. Its totient is φ = 238672690.

The previous prime is 238672669. The next prime is 238672711. The reversal of 238672691 is 196276832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238672691 - 2¹⁴ = 238656307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (238672601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119336345 + 119336346.

It is an arithmetic number, because the mean of its divisors is an integer number (119336346).

Almost surely, 2^238672691 is an apocalyptic number.

238672691 is a deficient number, since it is larger than the sum of its proper divisors (1).

238672691 is an equidigital number, since it uses as much as digits as its factorization.

238672691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 238672691 is about 15449.0352773240. The cubic root of 238672691 is about 620.2987556011.

The spelling of 238672691 in words is "two hundred thirty-eight million, six hundred seventy-two thousand, six hundred ninety-one".