109135538 has 18 divisors (see below), whose sum is σ = 167582109. Its totient is φ = 53304592.

The previous prime is 109135519. The next prime is 109135541. The reversal of 109135538 is 835531901.

It can be written as a sum of positive squares in 2 ways, for example, as 97555129 + 11580409 = 9877^2 + 3403^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7387.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109135498 and 109135507.

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 8 ways as a sum of consecutive naturals, for example, 1226198 + ... + 1226286.

Almost surely, 2^109135538 is an apocalyptic number.

109135538 is a deficient number, since it is larger than the sum of its proper divisors (58446571).

109135538 is an frugal number, since it uses more digits than its factorization.

109135538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 109135538 is about 10446.7955852501. The cubic root of 109135538 is about 477.8835316690.

Multiplying 109135538 by its product of nonzero digits (16200), we get a square (1767995715600 = 1329660²).

The spelling of 109135538 in words is "one hundred nine million, one hundred thirty-five thousand, five hundred thirty-eight".