108438613 has 2 divisors, whose sum is σ = 108438614. Its totient is φ = 108438612.

The previous prime is 108438571. The next prime is 108438619. The reversal of 108438613 is 316834801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103673124 + 4765489 = 10182^2 + 2183^2 .

It is an emirp because it is prime and its reverse (316834801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108438613 - 2⁹ = 108438101 is a prime.

It is equal to p_6218818 and since 108438613 and 6218818 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108438619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54219306 + 54219307.

It is an arithmetic number, because the mean of its divisors is an integer number (54219307).

Almost surely, 2^108438613 is an apocalyptic number.

It is an amenable number.

108438613 is a deficient number, since it is larger than the sum of its proper divisors (1).

108438613 is an equidigital number, since it uses as much as digits as its factorization.

108438613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 108438613 is about 10413.3862407960. The cubic root of 108438613 is about 476.8641251348.

The spelling of 108438613 in words is "one hundred eight million, four hundred thirty-eight thousand, six hundred thirteen".