100138178 has 16 divisors (see below), whose sum is σ = 172072320. Its totient is φ = 42814656.

The previous prime is 100138141. The next prime is 100138201. The reversal of 100138178 is 871831001.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100138178.

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, 2198 + ... + 14321.

It is an arithmetic number, because the mean of its divisors is an integer number (10754520).

Almost surely, 2^100138178 is an apocalyptic number.

100138178 is a deficient number, since it is larger than the sum of its proper divisors (71934142).

100138178 is a wasteful number, since it uses less digits than its factorization.

100138178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16961.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 100138178 is about 10006.9065150025. The cubic root of 100138178 is about 464.3725734545.

Adding to 100138178 its reverse (871831001), we get a palindrome (971969179).

The spelling of 100138178 in words is "one hundred million, one hundred thirty-eight thousand, one hundred seventy-eight".