1964188997676 has 18 divisors (see below), whose sum is σ = 4965033299772. Its totient is φ = 654729665880.

The previous prime is 1964188997671. The next prime is 1964188997677. The reversal of 1964188997676 is 6767998814691.

1964188997676 is a `hidden beast` number, since 196 + 418 + 8 + 9 + 9 + 7 + 6 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1964188997595 and 1964188997604.

It is not an unprimeable number, because it can be changed into a prime (1964188997671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27280402710 + ... + 27280402781.

Almost surely, 2^{1964188997676} is an apocalyptic number.

It is an amenable number.

1964188997676 is an abundant number, since it is smaller than the sum of its proper divisors (3000844302096).

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

1964188997676 is a wasteful number, since it uses less digits than its factorization.

1964188997676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54560805501 (or 54560805496 counting only the distinct ones).

The product of its digits is 1975228416, while the sum is 81.

The spelling of 1964188997676 in words is "one trillion, nine hundred sixty-four billion, one hundred eighty-eight million, nine hundred ninety-seven thousand, six hundred seventy-six".