998951611 has 16 divisors (see below), whose sum is σ = 1160939520. Its totient is φ = 841851360.

The previous prime is 998951609. The next prime is 998951623. The reversal of 998951611 is 116159899.

It is not a de Polignac number, because 998951611 - 2¹ = 998951609 is a prime.

It is a super-2 number, since 2×998951611² = 1995808642238990642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998951911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190750 + ... + 195916.

It is an arithmetic number, because the mean of its divisors is an integer number (72558720).

Almost surely, 2^998951611 is an apocalyptic number.

998951611 is a deficient number, since it is larger than the sum of its proper divisors (161987909).

998951611 is a wasteful number, since it uses less digits than its factorization.

998951611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634.

The product of its digits is 174960, while the sum is 49.

The square root of 998951611 is about 31606.1957691842. The cubic root of 998951611 is about 999.6504148044.

The spelling of 998951611 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, six hundred eleven".