1008648138 has 16 divisors (see below), whose sum is σ = 2019210336. Its totient is φ = 335897040.

The previous prime is 1008648107. The next prime is 1008648167. The reversal of 1008648138 is 8318468001.

It is a junction number, because it is equal to n+sod(n) for n = 1008648096 and 1008648105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72856 + ... + 85587.

It is an arithmetic number, because the mean of its divisors is an integer number (126200646).

Almost surely, 2^1008648138 is an apocalyptic number.

1008648138 is an abundant number, since it is smaller than the sum of its proper divisors (1010562198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1008648138 is a wasteful number, since it uses less digits than its factorization.

1008648138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159509.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1008648138 is about 31759.2213065749. The cubic root of 1008648138 is about 1002.8744423313.

The spelling of 1008648138 in words is "one billion, eight million, six hundred forty-eight thousand, one hundred thirty-eight".