436143138 has 16 divisors (see below), whose sum is σ = 918196320. Its totient is φ = 137729376.

The previous prime is 436143083. The next prime is 436143139. The reversal of 436143138 is 831341634.

It is a junction number, because it is equal to n+sod(n) for n = 436143099 and 436143108.

It is not an unprimeable number, because it can be changed into a prime (436143139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1912795 + ... + 1913022.

It is an arithmetic number, because the mean of its divisors is an integer number (57387270).

Almost surely, 2^436143138 is an apocalyptic number.

436143138 is an abundant number, since it is smaller than the sum of its proper divisors (482053182).

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

436143138 is a wasteful number, since it uses less digits than its factorization.

436143138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825841.

The product of its digits is 20736, while the sum is 33.

The square root of 436143138 is about 20884.0402700244. The cubic root of 436143138 is about 758.3616241052.

The spelling of 436143138 in words is "four hundred thirty-six million, one hundred forty-three thousand, one hundred thirty-eight".