238642886507 has 4 divisors (see below), whose sum is σ = 239132913456. Its totient is φ = 238152859560.

The previous prime is 238642886477. The next prime is 238642886519. The reversal of 238642886507 is 705688246832.

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

It is a cyclic number.

It is not a de Polignac number, because 238642886507 - 2¹² = 238642882411 is a prime.

It is a super-2 number, since 2×238642886507² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238642886597) 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, 245012744 + ... + 245013717.

It is an arithmetic number, because the mean of its divisors is an integer number (59783228364).

Almost surely, 2^238642886507 is an apocalyptic number.

238642886507 is a deficient number, since it is larger than the sum of its proper divisors (490026949).

238642886507 is an equidigital number, since it uses as much as digits as its factorization.

238642886507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490026948.

The product of its (nonzero) digits is 30965760, while the sum is 59.

The spelling of 238642886507 in words is "two hundred thirty-eight billion, six hundred forty-two million, eight hundred eighty-six thousand, five hundred seven".