98153681 has 4 divisors (see below), whose sum is σ = 98197092. Its totient is φ = 98110272.

The previous prime is 98153669. The next prime is 98153689. The reversal of 98153681 is 18635189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18635189 = 823 ⋅22643.

It can be written as a sum of positive squares in 2 ways, for example, as 31584400 + 66569281 = 5620^2 + 8159^2 .

It is a cyclic number.

It is not a de Polignac number, because 98153681 - 2⁶ = 98153617 is a prime.

It is a super-3 number, since 3×98153681³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98153689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18116 + ... + 22901.

It is an arithmetic number, because the mean of its divisors is an integer number (24549273).

Almost surely, 2^98153681 is an apocalyptic number.

It is an amenable number.

98153681 is a deficient number, since it is larger than the sum of its proper divisors (43411).

98153681 is a wasteful number, since it uses less digits than its factorization.

98153681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43410.

The product of its digits is 51840, while the sum is 41.

The square root of 98153681 is about 9907.2539585901. The cubic root of 98153681 is about 461.2845021354.

The spelling of 98153681 in words is "ninety-eight million, one hundred fifty-three thousand, six hundred eighty-one".