1098120065 has 8 divisors (see below), whose sum is σ = 1505993280. Its totient is φ = 752996592.

The previous prime is 1098120059. The next prime is 1098120131. The reversal of 1098120065 is 5600218901.

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 1098120065 - 2¹⁴ = 1098103681 is a prime.

It is a super-3 number, since 3×1098120065³ (a number of 28 digits) contains 333 as substring.

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, 15687395 + ... + 15687464.

It is an arithmetic number, because the mean of its divisors is an integer number (188249160).

Almost surely, 2^1098120065 is an apocalyptic number.

It is an amenable number.

1098120065 is a deficient number, since it is larger than the sum of its proper divisors (407873215).

1098120065 is an equidigital number, since it uses as much as digits as its factorization.

1098120065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31374871.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1098120065 is about 33137.8946977626. The cubic root of 1098120065 is about 1031.6917136089.

Adding to 1098120065 its reverse (5600218901), we get a palindrome (6698338966).

The spelling of 1098120065 in words is "one billion, ninety-eight million, one hundred twenty thousand, sixty-five".