108578981 has 4 divisors (see below), whose sum is σ = 124090272. Its totient is φ = 93067692.

The previous prime is 108578969. The next prime is 108578989. The reversal of 108578981 is 189875801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189875801 = 4951 ⋅38351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108578981 is a prime.

It is a super-2 number, since 2×108578981² = 23578790229996722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108578989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7755635 + ... + 7755648.

It is an arithmetic number, because the mean of its divisors is an integer number (31022568).

Almost surely, 2^108578981 is an apocalyptic number.

It is an amenable number.

108578981 is a deficient number, since it is larger than the sum of its proper divisors (15511291).

108578981 is an equidigital number, since it uses as much as digits as its factorization.

108578981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15511290.

The product of its (nonzero) digits is 161280, while the sum is 47.

The square root of 108578981 is about 10420.1238476325. The cubic root of 108578981 is about 477.0697948083.

The spelling of 108578981 in words is "one hundred eight million, five hundred seventy-eight thousand, nine hundred eighty-one".