389620431655 has 16 divisors (see below), whose sum is σ = 575439407424. Its totient is φ = 246616888320.

The previous prime is 389620431631. The next prime is 389620431689. The reversal of 389620431655 is 556134026983.

It is not a de Polignac number, because 389620431655 - 2²³ = 389612043047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428153866 + ... + 428154775.

It is an arithmetic number, because the mean of its divisors is an integer number (35964962964).

Almost surely, 2^389620431655 is an apocalyptic number.

389620431655 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

389620431655 is a deficient number, since it is larger than the sum of its proper divisors (185818975769).

389620431655 is a wasteful number, since it uses less digits than its factorization.

389620431655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856308666.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 389620431655 in words is "three hundred eighty-nine billion, six hundred twenty million, four hundred thirty-one thousand, six hundred fifty-five".