1098671730 has 64 divisors (see below), whose sum is σ = 2847519360. Its totient is φ = 269692416.

The previous prime is 1098671729. The next prime is 1098671741. The reversal of 1098671730 is 371768901.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144094 + ... + 151526.

It is an arithmetic number, because the mean of its divisors is an integer number (44492490).

Almost surely, 2^1098671730 is an apocalyptic number.

1098671730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098671730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1423759680).

1098671730 is an abundant number, since it is smaller than the sum of its proper divisors (1748847630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098671730 is a wasteful number, since it uses less digits than its factorization.

1098671730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 1098671730 is about 33146.2174312545. The cubic root of 1098671730 is about 1031.8644491005.

The spelling of 1098671730 in words is "one billion, ninety-eight million, six hundred seventy-one thousand, seven hundred thirty".