901980198 has 80 divisors (see below), whose sum is σ = 2431461120. Its totient is φ = 244139184.

The previous prime is 901980137. The next prime is 901980239. The reversal of 901980198 is 891089109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 615 + ... + 42477.

It is an arithmetic number, because the mean of its divisors is an integer number (30393264).

Almost surely, 2^901980198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 901980198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215730560).

901980198 is an abundant number, since it is smaller than the sum of its proper divisors (1529480922).

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

901980198 is a wasteful number, since it uses less digits than its factorization.

901980198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903 (or 41894 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The square root of 901980198 is about 30032.9851663134. The cubic root of 901980198 is about 966.1969622682.

The spelling of 901980198 in words is "nine hundred one million, nine hundred eighty thousand, one hundred ninety-eight".