389181656041 has 16 divisors (see below), whose sum is σ = 415742126976. Its totient is φ = 363432617856.

The previous prime is 389181656029. The next prime is 389181656057. The reversal of 389181656041 is 140656181983.

It is a cyclic number.

It is not a de Polignac number, because 389181656041 - 2⁵ = 389181656009 is a prime.

It is a super-2 number, since 2×389181656041² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389181656041.

It is not an unprimeable number, because it can be changed into a prime (389181656021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2037931 + ... + 2220703.

It is an arithmetic number, because the mean of its divisors is an integer number (25983882936).

Almost surely, 2^389181656041 is an apocalyptic number.

It is an amenable number.

389181656041 is a deficient number, since it is larger than the sum of its proper divisors (26560470935).

389181656041 is a wasteful number, since it uses less digits than its factorization.

389181656041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184992.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 389181656041 in words is "three hundred eighty-nine billion, one hundred eighty-one million, six hundred fifty-six thousand, forty-one".