938130817155 has 48 divisors (see below), whose sum is σ = 1822283232000. Its totient is φ = 403632741888.

The previous prime is 938130817139. The next prime is 938130817157. The reversal of 938130817155 is 551718031839.

It is a happy number.

It is not a de Polignac number, because 938130817155 - 2⁴ = 938130817139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 938130817098 and 938130817107.

It is not an unprimeable number, because it can be changed into a prime (938130817157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15427405 + ... + 15488094.

It is an arithmetic number, because the mean of its divisors is an integer number (37964234000).

Almost surely, 2^938130817155 is an apocalyptic number.

938130817155 is a deficient number, since it is larger than the sum of its proper divisors (884152414845).

938130817155 is a wasteful number, since it uses less digits than its factorization.

938130817155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30915548 (or 30915531 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 51.

The spelling of 938130817155 in words is "nine hundred thirty-eight billion, one hundred thirty million, eight hundred seventeen thousand, one hundred fifty-five".