1988000493 has 8 divisors (see below), whose sum is σ = 2651484000. Its totient is φ = 1324925328.

The previous prime is 1988000461. The next prime is 1988000537. The reversal of 1988000493 is 3940008891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1988000493 - 2⁵ = 1988000461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988000453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90538 + ... + 110331.

It is an arithmetic number, because the mean of its divisors is an integer number (331435500).

Almost surely, 2^1988000493 is an apocalyptic number.

It is an amenable number.

1988000493 is a deficient number, since it is larger than the sum of its proper divisors (663483507).

1988000493 is a wasteful number, since it uses less digits than its factorization.

1988000493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204171.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1988000493 is about 44586.9991477336. Note that the first 3 decimals coincide. The cubic root of 1988000493 is about 1257.3962551841.

The spelling of 1988000493 in words is "one billion, nine hundred eighty-eight million, four hundred ninety-three", and thus it is an aban number.