200137609 has 27 divisors (see below), whose sum is σ = 243532557. Its totient is φ = 163992024.

The previous prime is 200137601. The next prime is 200137627. The reversal of 200137609 is 906731002.

The square root of 200137609 is 14147.

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

It is not a de Polignac number, because 200137609 - 2³ = 200137601 is a prime.

It is a super-3 number, since 3×200137609³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200137601) 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, 4258224 + ... + 4258270.

Almost surely, 2^200137609 is an apocalyptic number.

200137609 is the 14147-th square number.

200137609 is the 7074-th centered octagonal number.

It is an amenable number.

200137609 is a deficient number, since it is larger than the sum of its proper divisors (43394948).

200137609 is an frugal number, since it uses more digits than its factorization.

200137609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The cubic root of 200137609 is about 584.9376406123.

The spelling of 200137609 in words is "two hundred million, one hundred thirty-seven thousand, six hundred nine".