1988000539 has 8 divisors (see below), whose sum is σ = 2273073120. Its totient is φ = 1703196096.

The previous prime is 1988000537. The next prime is 1988000543. The reversal of 1988000539 is 9350008891.

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

It is not a de Polignac number, because 1988000539 - 2¹ = 1988000537 is a prime.

It is a super-2 number, since 2×1988000539² = 7904292286128581042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1988000495 and 1988000504.

It is not an unprimeable number, because it can be changed into a prime (1988000537) 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, 50884 + ... + 81025.

It is an arithmetic number, because the mean of its divisors is an integer number (284134140).

Almost surely, 2^1988000539 is an apocalyptic number.

1988000539 is a deficient number, since it is larger than the sum of its proper divisors (285072581).

1988000539 is a wasteful number, since it uses less digits than its factorization.

1988000539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134069.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1988000539 is about 44586.9996635791. Note that the first 3 decimals coincide. The cubic root of 1988000539 is about 1257.3962648823.

The spelling of 1988000539 in words is "one billion, nine hundred eighty-eight million, five hundred thirty-nine", and thus it is an aban number.