238609653 has 4 divisors (see below), whose sum is σ = 318146208. Its totient is φ = 159073100.

The previous prime is 238609649. The next prime is 238609661. The reversal of 238609653 is 356906832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238609653 - 2² = 238609649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238609663) 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, 39768273 + ... + 39768278.

It is an arithmetic number, because the mean of its divisors is an integer number (79536552).

Almost surely, 2^238609653 is an apocalyptic number.

It is an amenable number.

238609653 is a deficient number, since it is larger than the sum of its proper divisors (79536555).

238609653 is an equidigital number, since it uses as much as digits as its factorization.

238609653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79536554.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 238609653 is about 15446.9949504750. The cubic root of 238609653 is about 620.2441398903.

The spelling of 238609653 in words is "two hundred thirty-eight million, six hundred nine thousand, six hundred fifty-three".