838198400838 has 32 divisors (see below), whose sum is σ = 1715443293696. Its totient is φ = 272892176928.

The previous prime is 838198400801. The next prime is 838198400861. The reversal of 838198400838 is 838004891838.

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, 13214856 + ... + 13278132.

It is an arithmetic number, because the mean of its divisors is an integer number (53607602928).

Almost surely, 2^838198400838 is an apocalyptic number.

838198400838 is an abundant number, since it is smaller than the sum of its proper divisors (877244892858).

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

838198400838 is a wasteful number, since it uses less digits than its factorization.

838198400838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114668.

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 838198400838 in words is "eight hundred thirty-eight billion, one hundred ninety-eight million, four hundred thousand, eight hundred thirty-eight".