109081538 has 8 divisors (see below), whose sum is σ = 163667388. Its totient is φ = 54525744.

The previous prime is 109081507. The next prime is 109081543. The reversal of 109081538 is 835180901.

It can be written as a sum of positive squares in 2 ways, for example, as 108014449 + 1067089 = 10393^2 + 1033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 109081498 and 109081507.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7820 + ... + 16712.

Almost surely, 2^109081538 is an apocalyptic number.

109081538 is a deficient number, since it is larger than the sum of its proper divisors (54585850).

109081538 is an equidigital number, since it uses as much as digits as its factorization.

109081538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15028.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 109081538 is about 10444.2107408842. The cubic root of 109081538 is about 477.8047001275.

It can be divided in two parts, 1090 and 81538, that added together give a palindrome (82628).

The spelling of 109081538 in words is "one hundred nine million, eighty-one thousand, five hundred thirty-eight".