163788385238 has 16 divisors (see below), whose sum is σ = 256222345344. Its totient is φ = 78435406080.

The previous prime is 163788385193. The next prime is 163788385253. The reversal of 163788385238 is 832583887361.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13611245 + ... + 13623272.

It is an arithmetic number, because the mean of its divisors is an integer number (16013896584).

Almost surely, 2^163788385238 is an apocalyptic number.

163788385238 is a deficient number, since it is larger than the sum of its proper divisors (92433960106).

163788385238 is a wasteful number, since it uses less digits than its factorization.

163788385238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27234647.

The product of its digits is 46448640, while the sum is 62.

The spelling of 163788385238 in words is "one hundred sixty-three billion, seven hundred eighty-eight million, three hundred eighty-five thousand, two hundred thirty-eight".