145438385 has 4 divisors (see below), whose sum is σ = 174526068. Its totient is φ = 116350704.

The previous prime is 145438343. The next prime is 145438409. The reversal of 145438385 is 583834541.

145438385 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 can be written as a sum of positive squares in 2 ways, for example, as 15295921 + 130142464 = 3911^2 + 11408^2 .

It is a cyclic number.

It is not a de Polignac number, because 145438385 - 2¹⁰ = 145437361 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14543834 + ... + 14543843.

It is an arithmetic number, because the mean of its divisors is an integer number (43631517).

Almost surely, 2^145438385 is an apocalyptic number.

It is an amenable number.

145438385 is a deficient number, since it is larger than the sum of its proper divisors (29087683).

145438385 is an equidigital number, since it uses as much as digits as its factorization.

145438385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29087682.

The product of its digits is 230400, while the sum is 41.

The square root of 145438385 is about 12059.7837874483. The cubic root of 145438385 is about 525.8877015008.

The spelling of 145438385 in words is "one hundred forty-five million, four hundred thirty-eight thousand, three hundred eighty-five".