386064638281 has 27 divisors (see below), whose sum is σ = 461753842599. Its totient is φ = 321834755088.

The previous prime is 386064638273. The next prime is 386064638303. The reversal of 386064638281 is 182836460683.

The square root of 386064638281 is 621341.

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., 345455940025 + 40608698256 = 587755^2 + 201516^2 .

It is not a de Polignac number, because 386064638281 - 2³ = 386064638273 is a prime.

It is a super-2 number, since 2×386064638281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (386064638381) 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, 160926120 + ... + 160928518.

Almost surely, 2^386064638281 is an apocalyptic number.

386064638281 is the 621341-st square number.

386064638281 is the 310671-st centered octagonal number.

It is an amenable number.

386064638281 is a deficient number, since it is larger than the sum of its proper divisors (75689204318).

386064638281 is an frugal number, since it uses more digits than its factorization.

386064638281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886 (or 2443 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 386064638281 in words is "three hundred eighty-six billion, sixty-four million, six hundred thirty-eight thousand, two hundred eighty-one".