438632145 has 64 divisors (see below), whose sum is σ = 913006080. Its totient is φ = 195609600.

The previous prime is 438632143. The next prime is 438632191. The reversal of 438632145 is 541236834.

438632145 is a `hidden beast` number, since 4 + 3 + 8 + 632 + 14 + 5 = 666.

It is not a de Polignac number, because 438632145 - 2¹ = 438632143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438632143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33085 + ... + 44405.

It is an arithmetic number, because the mean of its divisors is an integer number (14265720).

Almost surely, 2^438632145 is an apocalyptic number.

438632145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438632145 is an abundant number, since it is smaller than the sum of its proper divisors (474373935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438632145 is a wasteful number, since it uses less digits than its factorization.

438632145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11383 (or 11377 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 438632145 is about 20943.5466194243. The cubic root of 438632145 is about 759.8015092215.

Adding to 438632145 its reverse (541236834), we get a palindrome (979868979).

The spelling of 438632145 in words is "four hundred thirty-eight million, six hundred thirty-two thousand, one hundred forty-five".