10138818 has 16 divisors (see below), whose sum is σ = 21345120. Its totient is φ = 3201696.

The previous prime is 10138813. The next prime is 10138823. The reversal of 10138818 is 81883101.

It is an interprime number because it is at equal distance from previous prime (10138813) and next prime (10138823).

It is not an unprimeable number, because it can be changed into a prime (10138811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44355 + ... + 44582.

It is an arithmetic number, because the mean of its divisors is an integer number (1334070).

Almost surely, 2^10138818 is an apocalyptic number.

10138818 is an abundant number, since it is smaller than the sum of its proper divisors (11206302).

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

10138818 is a wasteful number, since it uses less digits than its factorization.

10138818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88961.

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 10138818 is about 3184.1510642556. The cubic root of 10138818 is about 216.4358056471.

The spelling of 10138818 in words is "ten million, one hundred thirty-eight thousand, eight hundred eighteen".