1988499194 has 32 divisors (see below), whose sum is σ = 3297317760. Its totient is φ = 891878400.

The previous prime is 1988499157. The next prime is 1988499239. The reversal of 1988499194 is 4919948891.

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 15 ways as a sum of consecutive naturals, for example, 597467 + ... + 600785.

It is an arithmetic number, because the mean of its divisors is an integer number (103041180).

Almost surely, 2^1988499194 is an apocalyptic number.

1988499194 is a deficient number, since it is larger than the sum of its proper divisors (1308818566).

1988499194 is a wasteful number, since it uses less digits than its factorization.

1988499194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686.

The product of its digits is 6718464, while the sum is 62.

The square root of 1988499194 is about 44592.5912456318. The cubic root of 1988499194 is about 1257.5013880123.

The spelling of 1988499194 in words is "one billion, nine hundred eighty-eight million, four hundred ninety-nine thousand, one hundred ninety-four".