389154481 has 2 divisors, whose sum is σ = 389154482. Its totient is φ = 389154480.

The previous prime is 389154473. The next prime is 389154541. The reversal of 389154481 is 184451983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385768881 + 3385600 = 19641^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 389154481 - 2³ = 389154473 is a prime.

It is a super-2 number, since 2×389154481² = 302882420164758722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (389154281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194577240 + 194577241.

It is an arithmetic number, because the mean of its divisors is an integer number (194577241).

Almost surely, 2^389154481 is an apocalyptic number.

It is an amenable number.

389154481 is a deficient number, since it is larger than the sum of its proper divisors (1).

389154481 is an equidigital number, since it uses as much as digits as its factorization.

389154481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 389154481 is about 19726.9987833933. The cubic root of 389154481 is about 730.0859853679.

It can be divided in two parts, 38 and 9154481, that added together give a palindrome (9154519).

The spelling of 389154481 in words is "three hundred eighty-nine million, one hundred fifty-four thousand, four hundred eighty-one".