198137473 has 2 divisors, whose sum is σ = 198137474. Its totient is φ = 198137472.

The previous prime is 198137447. The next prime is 198137497. The reversal of 198137473 is 374731891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162996289 + 35141184 = 12767^2 + 5928^2 .

It is a cyclic number.

It is not a de Polignac number, because 198137473 - 2¹⁷ = 198006401 is a prime.

It is a super-3 number, since 3×198137473³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (198137413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99068736 + 99068737.

It is an arithmetic number, because the mean of its divisors is an integer number (99068737).

Almost surely, 2^198137473 is an apocalyptic number.

It is an amenable number.

198137473 is a deficient number, since it is larger than the sum of its proper divisors (1).

198137473 is an equidigital number, since it uses as much as digits as its factorization.

198137473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 198137473 is about 14076.1313222064. The cubic root of 198137473 is about 582.9825290670.

The spelling of 198137473 in words is "one hundred ninety-eight million, one hundred thirty-seven thousand, four hundred seventy-three".