1098868866 has 16 divisors (see below), whose sum is σ = 2207337600. Its totient is φ = 364689648.

The previous prime is 1098868801. The next prime is 1098868871. The reversal of 1098868866 is 6688688901.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398506 + ... + 401253.

It is an arithmetic number, because the mean of its divisors is an integer number (137958600).

Almost surely, 2^1098868866 is an apocalyptic number.

1098868866 is an abundant number, since it is smaller than the sum of its proper divisors (1108468734).

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

1098868866 is a wasteful number, since it uses less digits than its factorization.

1098868866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799993.

The product of its (nonzero) digits is 7962624, while the sum is 60.

The square root of 1098868866 is about 33149.1910308532. The cubic root of 1098868866 is about 1031.9261616391.

The spelling of 1098868866 in words is "one billion, ninety-eight million, eight hundred sixty-eight thousand, eight hundred sixty-six".