1098696312 has 128 divisors (see below), whose sum is σ = 3531379200. Its totient is φ = 313878240.

The previous prime is 1098696283. The next prime is 1098696317. The reversal of 1098696312 is 2136968901.

It is a happy number.

1098696312 is a `hidden beast` number, since 1 + 0 + 9 + 8 + 6 + 9 + 631 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098696317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117987 + ... + 126957.

It is an arithmetic number, because the mean of its divisors is an integer number (27588900).

Almost surely, 2^1098696312 is an apocalyptic number.

1098696312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098696312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765689600).

1098696312 is an abundant number, since it is smaller than the sum of its proper divisors (2432682888).

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

1098696312 is an frugal number, since it uses more digits than its factorization.

1098696312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9005 (or 8983 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1098696312 is about 33146.5882407225. The cubic root of 1098696312 is about 1031.8721447879.

The spelling of 1098696312 in words is "one billion, ninety-eight million, six hundred ninety-six thousand, three hundred twelve".