18782663948 has 24 divisors (see below), whose sum is σ = 33306683760. Its totient is φ = 9266747840.

The previous prime is 18782663947. The next prime is 18782663987. The reversal of 18782663948 is 84936628781.

It is not an unprimeable number, because it can be changed into a prime (18782663941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238118 + ... + 307026.

It is an arithmetic number, because the mean of its divisors is an integer number (1387778490).

Almost surely, 2^18782663948 is an apocalyptic number.

It is an amenable number.

18782663948 is a deficient number, since it is larger than the sum of its proper divisors (14524019812).

18782663948 is a wasteful number, since it uses less digits than its factorization.

18782663948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69817 (or 69815 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 62.

The spelling of 18782663948 in words is "eighteen billion, seven hundred eighty-two million, six hundred sixty-three thousand, nine hundred forty-eight".