1993458908 has 12 divisors (see below), whose sum is σ = 3986917872. Its totient is φ = 854339520.

The previous prime is 1993458889. The next prime is 1993458911. The reversal of 1993458908 is 8098543991.

1993458908 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35597453 + ... + 35597508.

It is an arithmetic number, because the mean of its divisors is an integer number (332243156).

Almost surely, 2^1993458908 is an apocalyptic number.

It is an amenable number.

1993458908 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1993458908 is a wasteful number, since it uses less digits than its factorization.

1993458908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71194972 (or 71194970 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 56.

The square root of 1993458908 is about 44648.1680251273. The cubic root of 1993458908 is about 1258.5460065060.

The spelling of 1993458908 in words is "one billion, nine hundred ninety-three million, four hundred fifty-eight thousand, nine hundred eight".