18964771676 has 12 divisors (see below), whose sum is σ = 34332776520. Its totient is φ = 9155406960.

The previous prime is 18964771673. The next prime is 18964771711. The reversal of 18964771676 is 67617746981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964771673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81744590 + ... + 81744821.

It is an arithmetic number, because the mean of its divisors is an integer number (2861064710).

Almost surely, 2^18964771676 is an apocalyptic number.

It is an amenable number.

18964771676 is a deficient number, since it is larger than the sum of its proper divisors (15368004844).

18964771676 is a wasteful number, since it uses less digits than its factorization.

18964771676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163489444 (or 163489442 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 62.

The spelling of 18964771676 in words is "eighteen billion, nine hundred sixty-four million, seven hundred seventy-one thousand, six hundred seventy-six".