98161811 has 4 divisors (see below), whose sum is σ = 107085624. Its totient is φ = 89238000.

The previous prime is 98161793. The next prime is 98161813. The reversal of 98161811 is 11816189.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98161811 - 2⁶ = 98161747 is a prime.

It is a super-2 number, since 2×98161811² = 19271482277599442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98161813) 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, 4461890 + ... + 4461911.

It is an arithmetic number, because the mean of its divisors is an integer number (26771406).

Almost surely, 2^98161811 is an apocalyptic number.

98161811 is a deficient number, since it is larger than the sum of its proper divisors (8923813).

98161811 is a wasteful number, since it uses less digits than its factorization.

98161811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923812.

The product of its digits is 3456, while the sum is 35.

The square root of 98161811 is about 9907.6642555145. The cubic root of 98161811 is about 461.2972377401.

The spelling of 98161811 in words is "ninety-eight million, one hundred sixty-one thousand, eight hundred eleven".