1098533689 has 16 divisors (see below), whose sum is σ = 1221796800. Its totient is φ = 979272000.

The previous prime is 1098533687. The next prime is 1098533699. The reversal of 1098533689 is 9863358901.

It is a cyclic number.

It is not a de Polignac number, because 1098533689 - 2¹ = 1098533687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098533687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231834 + ... + 236524.

It is an arithmetic number, because the mean of its divisors is an integer number (76362300).

Almost surely, 2^1098533689 is an apocalyptic number.

It is an amenable number.

1098533689 is a deficient number, since it is larger than the sum of its proper divisors (123263111).

1098533689 is a wasteful number, since it uses less digits than its factorization.

1098533689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 1098533689 is about 33144.1350618778. The cubic root of 1098533689 is about 1031.8212315914.

The spelling of 1098533689 in words is "one billion, ninety-eight million, five hundred thirty-three thousand, six hundred eighty-nine".