1998334535 has 8 divisors (see below), whose sum is σ = 2398330080. Its totient is φ = 1598448544.

The previous prime is 1998334501. The next prime is 1998334537. The reversal of 1998334535 is 5354338991.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1998334535 - 2¹⁰ = 1998333511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998334537) 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, 20294 + ... + 66396.

It is an arithmetic number, because the mean of its divisors is an integer number (299791260).

Almost surely, 2^1998334535 is an apocalyptic number.

1998334535 is a deficient number, since it is larger than the sum of its proper divisors (399995545).

1998334535 is an equidigital number, since it uses as much as digits as its factorization.

1998334535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54777.

The product of its digits is 1749600, while the sum is 50.

The square root of 1998334535 is about 44702.7352071436. The cubic root of 1998334535 is about 1259.5712270387.

The spelling of 1998334535 in words is "one billion, nine hundred ninety-eight million, three hundred thirty-four thousand, five hundred thirty-five".