438163450 has 24 divisors (see below), whose sum is σ = 820189692. Its totient is φ = 174145920.

The previous prime is 438163399. The next prime is 438163459. The reversal of 438163450 is 54361834.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 261565929 + 176597521 = 16173^2 + 13289^2 .

It is a super-3 number, since 3×438163450³ (a number of 27 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (438163459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20059 + ... + 35758.

Almost surely, 2^438163450 is an apocalyptic number.

438163450 is a deficient number, since it is larger than the sum of its proper divisors (382026242).

438163450 is a wasteful number, since it uses less digits than its factorization.

438163450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55986 (or 55981 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 438163450 is about 20932.3541437651. The cubic root of 438163450 is about 759.5307872444.

The spelling of 438163450 in words is "four hundred thirty-eight million, one hundred sixty-three thousand, four hundred fifty".