1098913816 has 128 divisors (see below), whose sum is σ = 2834818560. Its totient is φ = 385459200.

The previous prime is 1098913771. The next prime is 1098913817. The reversal of 1098913816 is 6183198901.

It is a happy number.

It is a super-2 number, since 2×1098913816² = 2415223149991363712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098913817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326655 + ... + 330001.

It is an arithmetic number, because the mean of its divisors is an integer number (22147020).

Almost surely, 2^1098913816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098913816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417409280).

1098913816 is an abundant number, since it is smaller than the sum of its proper divisors (1735904744).

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

1098913816 is a wasteful number, since it uses less digits than its factorization.

1098913816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425 (or 3421 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 1098913816 is about 33149.8690193491. The cubic root of 1098913816 is about 1031.9402320012.

The spelling of 1098913816 in words is "one billion, ninety-eight million, nine hundred thirteen thousand, eight hundred sixteen".