1098312085 has 16 divisors (see below), whose sum is σ = 1433997936. Its totient is φ = 802695168.

The previous prime is 1098312071. The next prime is 1098312097. The reversal of 1098312085 is 5802138901.

It can be written as a sum of positive squares in 8 ways, for example, as 70660836 + 1027651249 = 8406^2 + 32057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098312085 - 2⁵ = 1098312053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80794 + ... + 93403.

It is an arithmetic number, because the mean of its divisors is an integer number (89624871).

Almost surely, 2^1098312085 is an apocalyptic number.

It is an amenable number.

1098312085 is a deficient number, since it is larger than the sum of its proper divisors (335685851).

1098312085 is a wasteful number, since it uses less digits than its factorization.

1098312085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174312.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1098312085 is about 33140.7918583730. The cubic root of 1098312085 is about 1031.7518448287.

The spelling of 1098312085 in words is "one billion, ninety-eight million, three hundred twelve thousand, eighty-five".