997851108 has 36 divisors (see below), whose sum is σ = 2473344272. Its totient is φ = 313050240.

The previous prime is 997851103. The next prime is 997851121. The reversal of 997851108 is 801158799.

It is not an unprimeable number, because it can be changed into a prime (997851103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140398 + ... + 147333.

Almost surely, 2^997851108 is an apocalyptic number.

It is an amenable number.

997851108 is an abundant number, since it is smaller than the sum of its proper divisors (1475493164).

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

997851108 is a wasteful number, since it uses less digits than its factorization.

997851108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287772 (or 287753 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 997851108 is about 31588.7813630092. The cubic root of 997851108 is about 999.2831889714.

The spelling of 997851108 in words is "nine hundred ninety-seven million, eight hundred fifty-one thousand, one hundred eight".