1988791359 has 12 divisors (see below), whose sum is σ = 2816882184. Its totient is φ = 1247868544.

The previous prime is 1988791339. The next prime is 1988791361. The reversal of 1988791359 is 9531978891.

It is not a de Polignac number, because 1988791359 - 2⁵ = 1988791327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988791309) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1146072 + ... + 1147805.

It is an arithmetic number, because the mean of its divisors is an integer number (234740182).

Almost surely, 2^1988791359 is an apocalyptic number.

1988791359 is a deficient number, since it is larger than the sum of its proper divisors (828090825).

1988791359 is a wasteful number, since it uses less digits than its factorization.

1988791359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293914 (or 2293897 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 60.

The square root of 1988791359 is about 44595.8670618702. The cubic root of 1988791359 is about 1257.5629721293.

The spelling of 1988791359 in words is "one billion, nine hundred eighty-eight million, seven hundred ninety-one thousand, three hundred fifty-nine".