2098981081 has 8 divisors (see below), whose sum is σ = 2193899904. Its totient is φ = 2004367200.

The previous prime is 2098981069. The next prime is 2098981123. The reversal of 2098981081 is 1801898902.

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

It is a de Polignac number, because none of the positive numbers 2^k-2098981081 is a prime.

It is a super-2 number, since 2×2098981081² = 8811443156791857122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2098981061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62101 + ... + 89746.

It is an arithmetic number, because the mean of its divisors is an integer number (274237488).

Almost surely, 2^2098981081 is an apocalyptic number.

It is an amenable number.

2098981081 is a deficient number, since it is larger than the sum of its proper divisors (94918823).

2098981081 is a wasteful number, since it uses less digits than its factorization.

2098981081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152471.

The product of its (nonzero) digits is 82944, while the sum is 46.

The square root of 2098981081 is about 45814.6382829768. The cubic root of 2098981081 is about 1280.3720193479.

The spelling of 2098981081 in words is "two billion, ninety-eight million, nine hundred eighty-one thousand, eighty-one".