1098868867 has 4 divisors (see below), whose sum is σ = 1099199176. Its totient is φ = 1098538560.

The previous prime is 1098868801. The next prime is 1098868871. The reversal of 1098868867 is 7688688901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7688688901 = 3947 ⋅1947983.

It is a cyclic number.

It is not a de Polignac number, because 1098868867 - 2¹¹ = 1098866819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098868877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160113 + ... + 166834.

It is an arithmetic number, because the mean of its divisors is an integer number (274799794).

Almost surely, 2^1098868867 is an apocalyptic number.

1098868867 is a deficient number, since it is larger than the sum of its proper divisors (330309).

1098868867 is an equidigital number, since it uses as much as digits as its factorization.

1098868867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330308.

The product of its (nonzero) digits is 9289728, while the sum is 61.

The square root of 1098868867 is about 33149.1910459366. The cubic root of 1098868867 is about 1031.9261619522.

The spelling of 1098868867 in words is "one billion, ninety-eight million, eight hundred sixty-eight thousand, eight hundred sixty-seven".