289270271138 has 4 divisors (see below), whose sum is σ = 433905406710. Its totient is φ = 144635135568.

The previous prime is 289270271131. The next prime is 289270271149. The reversal of 289270271138 is 831172072982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 284156161969 + 5114109169 = 533063^2 + 71513^2 .

It is not an unprimeable number, because it can be changed into a prime (289270271131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72317567783 + ... + 72317567786.

Almost surely, 2^289270271138 is an apocalyptic number.

289270271138 is a deficient number, since it is larger than the sum of its proper divisors (144635135572).

289270271138 is a wasteful number, since it uses less digits than its factorization.

289270271138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144635135571.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 289270271138 in words is "two hundred eighty-nine billion, two hundred seventy million, two hundred seventy-one thousand, one hundred thirty-eight".