147865628089 has 3 divisors (see below), whose sum is σ = 147866012623. Its totient is φ = 147865243556.

The previous prime is 147865628081. The next prime is 147865628093. The reversal of 147865628089 is 980826568741.

It is a happy number.

The square root of 147865628089 is 384533.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 142012154025 + 5853474064 = 376845^2 + 76508^2 .

It is not a de Polignac number, because 147865628089 - 2³ = 147865628081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147865628089.

It is not an unprimeable number, because it can be changed into a prime (147865628081) 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, 192267 + ... + 576799.

Almost surely, 2^147865628089 is an apocalyptic number.

147865628089 is the 384533-rd square number.

147865628089 is the 192267-th centered octagonal number.

It is an amenable number.

147865628089 is a deficient number, since it is larger than the sum of its proper divisors (384534).

147865628089 is an frugal number, since it uses more digits than its factorization.

147865628089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769066 (or 384533 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

Multiplying 147865628089 by its sum of digits (64), we get a square (9463400197696 = 3076264²).

The spelling of 147865628089 in words is "one hundred forty-seven billion, eight hundred sixty-five million, six hundred twenty-eight thousand, eighty-nine".