201786030436 has 9 divisors (see below), whose sum is σ = 353127125491. Its totient is φ = 100892566012.

The previous prime is 201786030431. The next prime is 201786030443. The reversal of 201786030436 is 634030687102.

The square root of 201786030436 is 449206.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201786030431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 786111 + ... + 1010713.

Almost surely, 2^201786030436 is an apocalyptic number.

201786030436 is the 449206-th square number.

It is an amenable number.

201786030436 is a deficient number, since it is larger than the sum of its proper divisors (151341095055).

201786030436 is an frugal number, since it uses more digits than its factorization.

201786030436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449210 (or 224605 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 201786030436 in words is "two hundred one billion, seven hundred eighty-six million, thirty thousand, four hundred thirty-six".