238130465 has 4 divisors (see below), whose sum is σ = 285756564. Its totient is φ = 190504368.

The previous prime is 238130429. The next prime is 238130467. The reversal of 238130465 is 564031832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141324544 + 96805921 = 11888^2 + 9839^2 .

It is a cyclic number.

It is not a de Polignac number, because 238130465 - 2¹⁴ = 238114081 is a prime.

It is a super-2 number, since 2×238130465² = 113412236722232450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238130467) 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, 23813042 + ... + 23813051.

It is an arithmetic number, because the mean of its divisors is an integer number (71439141).

Almost surely, 2^238130465 is an apocalyptic number.

It is an amenable number.

238130465 is a deficient number, since it is larger than the sum of its proper divisors (47626099).

238130465 is an equidigital number, since it uses as much as digits as its factorization.

238130465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47626098.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 238130465 is about 15431.4764361677. The cubic root of 238130465 is about 619.8286597295.

The spelling of 238130465 in words is "two hundred thirty-eight million, one hundred thirty thousand, four hundred sixty-five".