438666190074 has 36 divisors (see below), whose sum is σ = 1105617848634. Its totient is φ = 125333196912.

The previous prime is 438666190073. The next prime is 438666190097. The reversal of 438666190074 is 470091666834.

It can be written as a sum of positive squares in only one way, i.e., 288630041049 + 150036149025 = 537243^2 + 387345^2 .

It is a super-2 number, since 2×438666190074² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438666190074.

It is not an unprimeable number, because it can be changed into a prime (438666190073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 248676097 + ... + 248677860.

Almost surely, 2^438666190074 is an apocalyptic number.

438666190074 is an abundant number, since it is smaller than the sum of its proper divisors (666951658560).

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

438666190074 is a wasteful number, since it uses less digits than its factorization.

438666190074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497353979 (or 497353969 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 438666190074 in words is "four hundred thirty-eight billion, six hundred sixty-six million, one hundred ninety thousand, seventy-four".