1098142817 has 8 divisors (see below), whose sum is σ = 1107573096. Its totient is φ = 1088733312.

The previous prime is 1098142789. The next prime is 1098142823. The reversal of 1098142817 is 7182418901.

It can be written as a sum of positive squares in 4 ways, for example, as 39551521 + 1058591296 = 6289^2 + 32536^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098142817 - 2²⁰ = 1097094241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098142847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112163 + ... + 121559.

It is an arithmetic number, because the mean of its divisors is an integer number (138446637).

Almost surely, 2^1098142817 is an apocalyptic number.

It is an amenable number.

1098142817 is a deficient number, since it is larger than the sum of its proper divisors (9430279).

1098142817 is an equidigital number, since it uses as much as digits as its factorization.

1098142817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1098142817 is about 33138.2379887646. The cubic root of 1098142817 is about 1031.6988387824.

The spelling of 1098142817 in words is "one billion, ninety-eight million, one hundred forty-two thousand, eight hundred seventeen".