3718198197169 has 27 divisors (see below), whose sum is σ = 3813513048513. Its totient is φ = 3625257848832.

The previous prime is 3718198197143. The next prime is 3718198197211. The reversal of 3718198197169 is 9617918918173.

The square root of 3718198197169 is 1928263.

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

It can be written as a sum of positive squares in 4 ways, for example, as 371932878769 + 3346265318400 = 609863^2 + 1829280^2 .

It is not a de Polignac number, because 3718198197169 - 2⁷ = 3718198197041 is a prime.

It is a super-2 number, since 2×3718198197169² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3718198197098 and 3718198197107.

It is not an unprimeable number, because it can be changed into a prime (3718198197139) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19265275537 + ... + 19265275729.

It is an arithmetic number, because the mean of its divisors is an integer number (141241224019).

Almost surely, 2^{3718198197169} is an apocalyptic number.

3718198197169 is the 1928263-rd square number.

3718198197169 is the 964132-nd centered octagonal number.

It is an amenable number.

3718198197169 is a deficient number, since it is larger than the sum of its proper divisors (95314851344).

3718198197169 is an frugal number, since it uses more digits than its factorization.

3718198197169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 393 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 70.

The spelling of 3718198197169 in words is "three trillion, seven hundred eighteen billion, one hundred ninety-eight million, one hundred ninety-seven thousand, one hundred sixty-nine".