18769234648 has 8 divisors (see below), whose sum is σ = 35192314980. Its totient is φ = 9384617320.

The previous prime is 18769234643. The next prime is 18769234657. The reversal of 18769234648 is 84643296781.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18769234592 and 18769234601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18769234643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1173077158 + ... + 1173077173.

Almost surely, 2^18769234648 is an apocalyptic number.

It is an amenable number.

18769234648 is a deficient number, since it is larger than the sum of its proper divisors (16423080332).

18769234648 is a wasteful number, since it uses less digits than its factorization.

18769234648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346154337 (or 2346154333 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 58.

The spelling of 18769234648 in words is "eighteen billion, seven hundred sixty-nine million, two hundred thirty-four thousand, six hundred forty-eight".