998481915 has 12 divisors (see below), whose sum is σ = 1730702064. Its totient is φ = 532523664.

The previous prime is 998481823. The next prime is 998481923. The reversal of 998481915 is 519184899.

It is not a de Polignac number, because 998481915 - 2⁹ = 998481403 is a prime.

It is a super-2 number, since 2×998481915² = 1993932269164134450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11094199 + ... + 11094288.

It is an arithmetic number, because the mean of its divisors is an integer number (144225172).

Almost surely, 2^998481915 is an apocalyptic number.

998481915 is a deficient number, since it is larger than the sum of its proper divisors (732220149).

998481915 is a wasteful number, since it uses less digits than its factorization.

998481915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22188498 (or 22188495 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 998481915 is about 31598.7644536934. The cubic root of 998481915 is about 999.4937153858.

The spelling of 998481915 in words is "nine hundred ninety-eight million, four hundred eighty-one thousand, nine hundred fifteen".