189596695981 has 16 divisors (see below), whose sum is σ = 244005470208. Its totient is φ = 142971951600.

The previous prime is 189596695979. The next prime is 189596696021.

189596695981 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 189596695981 - 2¹ = 189596695979 is a prime.

It is a super-2 number, since 2×189596695981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189596695898 and 189596695907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189596695901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39712045 + ... + 39716818.

It is an arithmetic number, because the mean of its divisors is an integer number (15250341888).

Almost surely, 2^189596695981 is an apocalyptic number.

189596695981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

189596695981 is a deficient number, since it is larger than the sum of its proper divisors (54408774227).

189596695981 is a wasteful number, since it uses less digits than its factorization.

189596695981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79428912.

The product of its digits is 377913600, while the sum is 76.

The spelling of 189596695981 in words is "one hundred eighty-nine billion, five hundred ninety-six million, six hundred ninety-five thousand, nine hundred eighty-one".