189766311648 has 48 divisors (see below), whose sum is σ = 498839337360. Its totient is φ = 63166196736.

The previous prime is 189766311629. The next prime is 189766311667. The reversal of 189766311648 is 846113667981.

189766311648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189766311629) and next prime (189766311667).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×189766311648² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189766311591 and 189766311600.

It is a congruent number.

It is an unprimeable number.

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, 1325965 + ... + 1462092.

It is an arithmetic number, because the mean of its divisors is an integer number (10392486195).

Almost surely, 2^189766311648 is an apocalyptic number.

It is an amenable number.

189766311648 is an abundant number, since it is smaller than the sum of its proper divisors (309073025712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189766311648 is a wasteful number, since it uses less digits than its factorization.

189766311648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788779 (or 2788771 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 60.

The spelling of 189766311648 in words is "one hundred eighty-nine billion, seven hundred sixty-six million, three hundred eleven thousand, six hundred forty-eight".