1908198036 has 72 divisors (see below), whose sum is σ = 5079634560. Its totient is φ = 602800704.

The previous prime is 1908198029. The next prime is 1908198049. The reversal of 1908198036 is 6308918091.

1908198036 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1908197982 and 1908198000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79681 + ... + 100823.

It is an arithmetic number, because the mean of its divisors is an integer number (70550480).

Almost surely, 2^1908198036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1908198036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2539817280).

1908198036 is an abundant number, since it is smaller than the sum of its proper divisors (3171436524).

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

1908198036 is a wasteful number, since it uses less digits than its factorization.

1908198036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21285 (or 21280 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1908198036 is about 43682.9261382522. The cubic root of 1908198036 is about 1240.3411383637.

The spelling of 1908198036 in words is "one billion, nine hundred eight million, one hundred ninety-eight thousand, thirty-six".