1098868871 has 2 divisors, whose sum is σ = 1098868872. Its totient is φ = 1098868870.

The previous prime is 1098868801. The next prime is 1098868877. The reversal of 1098868871 is 1788688901.

It is a strong prime.

It is an emirp because it is prime and its reverse (1788688901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098868871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098868877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549434435 + 549434436.

It is an arithmetic number, because the mean of its divisors is an integer number (549434436).

Almost surely, 2^1098868871 is an apocalyptic number.

1098868871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098868871 is an equidigital number, since it uses as much as digits as its factorization.

1098868871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 56.

The square root of 1098868871 is about 33149.1911062698. The cubic root of 1098868871 is about 1031.9261632043.

The spelling of 1098868871 in words is "one billion, ninety-eight million, eight hundred sixty-eight thousand, eight hundred seventy-one".