378336938281 has 9 divisors (see below), whose sum is σ = 380426758551. Its totient is φ = 376258545792.

The previous prime is 378336938269. The next prime is 378336938327. The reversal of 378336938281 is 182839633873.

The square root of 378336938281 is 615091.

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., 91666645225 + 286670293056 = 302765^2 + 535416^2 .

It is not a de Polignac number, because 378336938281 - 2¹⁹ = 378336413993 is a prime.

It is a super-2 number, since 2×378336938281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378336938201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 118710970 + ... + 118714156.

It is an arithmetic number, because the mean of its divisors is an integer number (42269639839).

Almost surely, 2^378336938281 is an apocalyptic number.

378336938281 is the 615091-st square number.

378336938281 is the 307546-th centered octagonal number.

It is an amenable number.

378336938281 is a deficient number, since it is larger than the sum of its proper divisors (2089820270).

378336938281 is an frugal number, since it uses more digits than its factorization.

378336938281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760 (or 3380 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 61.

The spelling of 378336938281 in words is "three hundred seventy-eight billion, three hundred thirty-six million, nine hundred thirty-eight thousand, two hundred eighty-one".