197793000490 has 64 divisors (see below), whose sum is σ = 367789530528. Its totient is φ = 76529664000.

The previous prime is 197793000467. The next prime is 197793000529. The reversal of 197793000490 is 94000397791.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 122248828881 + 75544171609 = 349641^2 + 274853^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57147360 + ... + 57150820.

Almost surely, 2^197793000490 is an apocalyptic number.

197793000490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197793000490 is the 222370-th decagonal number.

197793000490 is a deficient number, since it is larger than the sum of its proper divisors (169996530038).

197793000490 is a wasteful number, since it uses less digits than its factorization.

197793000490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363.

The product of its (nonzero) digits is 428652, while the sum is 49.

The spelling of 197793000490 in words is "one hundred ninety-seven billion, seven hundred ninety-three million, four hundred ninety", and thus it is an aban number.