98915818 has 4 divisors (see below), whose sum is σ = 148373730. Its totient is φ = 49457908.

The previous prime is 98915807. The next prime is 98915827. The reversal of 98915818 is 81851989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81851989 = 439 ⋅186451.

It can be written as a sum of positive squares in only one way, i.e., 89813529 + 9102289 = 9477^2 + 3017^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24728953 + ... + 24728956.

Almost surely, 2^98915818 is an apocalyptic number.

98915818 is a deficient number, since it is larger than the sum of its proper divisors (49457912).

98915818 is a wasteful number, since it uses less digits than its factorization.

98915818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49457911.

The product of its digits is 207360, while the sum is 49.

The square root of 98915818 is about 9945.6431667339. The cubic root of 98915818 is about 462.4753420504.

It can be divided in two parts, 989 and 15818, that added together give a 5-th power (16807 = 7⁵).

The spelling of 98915818 in words is "ninety-eight million, nine hundred fifteen thousand, eight hundred eighteen".