238645783 has 2 divisors, whose sum is σ = 238645784. Its totient is φ = 238645782.

The previous prime is 238645763. The next prime is 238645801. The reversal of 238645783 is 387546832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238645783 - 2¹⁷ = 238514711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238645733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119322891 + 119322892.

It is an arithmetic number, because the mean of its divisors is an integer number (119322892).

Almost surely, 2^238645783 is an apocalyptic number.

238645783 is a deficient number, since it is larger than the sum of its proper divisors (1).

238645783 is an equidigital number, since it uses as much as digits as its factorization.

238645783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 46.

The square root of 238645783 is about 15448.1643893377. The cubic root of 238645783 is about 620.2754438624.

The spelling of 238645783 in words is "two hundred thirty-eight million, six hundred forty-five thousand, seven hundred eighty-three".