206310192438 has 64 divisors (see below), whose sum is σ = 487821754368. Its totient is φ = 56921974560.

The previous prime is 206310192409. The next prime is 206310192499. The reversal of 206310192438 is 834291013602.

It is a junction number, because it is equal to n+sod(n) for n = 206310192396 and 206310192405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438381 + ... + 777687.

It is an arithmetic number, because the mean of its divisors is an integer number (7622214912).

Almost surely, 2^206310192438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206310192438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243910877184).

206310192438 is an abundant number, since it is smaller than the sum of its proper divisors (281511561930).

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

206310192438 is a wasteful number, since it uses less digits than its factorization.

206310192438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339817.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 206310192438 in words is "two hundred six billion, three hundred ten million, one hundred ninety-two thousand, four hundred thirty-eight".