238065491 has 4 divisors (see below), whose sum is σ = 239262000. Its totient is φ = 236868984.

The previous prime is 238065469. The next prime is 238065521. The reversal of 238065491 is 194560832.

It is a happy number.

238065491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238065491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238065431) 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, 597956 + ... + 598353.

It is an arithmetic number, because the mean of its divisors is an integer number (59815500).

Almost surely, 2^238065491 is an apocalyptic number.

238065491 is a deficient number, since it is larger than the sum of its proper divisors (1196509).

238065491 is a wasteful number, since it uses less digits than its factorization.

238065491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196508.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 238065491 is about 15429.3710500461. The cubic root of 238065491 is about 619.7722810959.

The spelling of 238065491 in words is "two hundred thirty-eight million, sixty-five thousand, four hundred ninety-one".