1997587108 has 24 divisors (see below), whose sum is σ = 4037904864. Its totient is φ = 854582400.

The previous prime is 1997587103. The next prime is 1997587129. The reversal of 1997587108 is 8017857991.

It is not an unprimeable number, because it can be changed into a prime (1997587103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334538 + ... + 1336033.

It is an arithmetic number, because the mean of its divisors is an integer number (168246036).

Almost surely, 2^1997587108 is an apocalyptic number.

It is an amenable number.

1997587108 is an abundant number, since it is smaller than the sum of its proper divisors (2040317756).

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

1997587108 is a wasteful number, since it uses less digits than its factorization.

1997587108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670603 (or 2670601 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 55.

The square root of 1997587108 is about 44694.3744558529. The cubic root of 1997587108 is about 1259.4141704290.

The spelling of 1997587108 in words is "one billion, nine hundred ninety-seven million, five hundred eighty-seven thousand, one hundred eight".