2098549157769 has 27 divisors (see below), whose sum is σ = 3139555985319. Its totient is φ = 1350709138800.

The previous prime is 2098549157743. The next prime is 2098549157773. The reversal of 2098549157769 is 9677519458902.

The square root of 2098549157769 is 1448637.

It is a perfect power (a square), and thus also a powerful number.

2098549157769 is a `hidden beast` number, since 2 + 0 + 9 + 8 + 5 + 49 + 1 + 577 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1100428274169 + 998120883600 = 1049013^2 + 999060^2 .

It is not a de Polignac number, because 2098549157769 - 2⁵ = 2098549157737 is a prime.

It is a super-2 number, since 2×2098549157769² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2098549157697 and 2098549157706.

It is not an unprimeable number, because it can be changed into a prime (2098549157729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 126023094 + ... + 126039744.

Almost surely, 2^{2098549157769} is an apocalyptic number.

2098549157769 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2098549157769 is the 1448637-th square number.

2098549157769 is the 724319-th centered octagonal number.

It is an amenable number.

2098549157769 is a deficient number, since it is larger than the sum of its proper divisors (1041006827550).

2098549157769 is an frugal number, since it uses more digits than its factorization.

2098549157769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33366 (or 16683 counting only the distinct ones).

The product of its (nonzero) digits is 342921600, while the sum is 72.

The spelling of 2098549157769 in words is "two trillion, ninety-eight billion, five hundred forty-nine million, one hundred fifty-seven thousand, seven hundred sixty-nine".