209319060196 has 9 divisors (see below), whose sum is σ = 366309956649. Its totient is φ = 104659072584.

The previous prime is 209319060173. The next prime is 209319060233. The reversal of 209319060196 is 691060913902.

The square root of 209319060196 is 457514.

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

It can be written as a sum of positive squares in only one way, i.e., 87562728100 + 121756332096 = 295910^2 + 348936^2 .

It is a super-2 number, since 2×209319060196² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 800650 + ... + 1029406.

Almost surely, 2^209319060196 is an apocalyptic number.

209319060196 is the 457514-th square number.

It is an amenable number.

209319060196 is a deficient number, since it is larger than the sum of its proper divisors (156990896453).

209319060196 is an frugal number, since it uses more digits than its factorization.

209319060196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457518 (or 228759 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 209319060196 in words is "two hundred nine billion, three hundred nineteen million, sixty thousand, one hundred ninety-six".