8210985438 has 32 divisors (see below), whose sum is σ = 17039619072. Its totient is φ = 2634969600.

The previous prime is 8210985401. The next prime is 8210985449. The reversal of 8210985438 is 8345890128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78468 + ... + 150263.

It is an arithmetic number, because the mean of its divisors is an integer number (532488096).

Almost surely, 2^8210985438 is an apocalyptic number.

8210985438 is an abundant number, since it is smaller than the sum of its proper divisors (8828633634).

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

8210985438 is a wasteful number, since it uses less digits than its factorization.

8210985438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228960.

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 8210985438 is about 90614.4880137829. The cubic root of 8210985438 is about 2017.4297799587.

The spelling of 8210985438 in words is "eight billion, two hundred ten million, nine hundred eighty-five thousand, four hundred thirty-eight".