389671081537 has 8 divisors (see below), whose sum is σ = 396099636840. Its totient is φ = 383243832960.

The previous prime is 389671081531. The next prime is 389671081543. The reversal of 389671081537 is 735180176983.

It is an interprime number because it is at equal distance from previous prime (389671081531) and next prime (389671081543).

It can be written as a sum of positive squares in 4 ways, for example, as 36450064561 + 353221016976 = 190919^2 + 594324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389671081537 - 2¹⁹ = 389670557249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389671081531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283983 + ... + 927355.

It is an arithmetic number, because the mean of its divisors is an integer number (49512454605).

Almost surely, 2^389671081537 is an apocalyptic number.

It is an amenable number.

389671081537 is a deficient number, since it is larger than the sum of its proper divisors (6428555303).

389671081537 is an equidigital number, since it uses as much as digits as its factorization.

389671081537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653363.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 389671081537 in words is "three hundred eighty-nine billion, six hundred seventy-one million, eighty-one thousand, five hundred thirty-seven".