109681534 has 16 divisors (see below), whose sum is σ = 170795520. Its totient is φ = 52769880.

The previous prime is 109681513. The next prime is 109681541. The reversal of 109681534 is 435186901.

It is a junction number, because it is equal to n+sod(n) for n = 109681493 and 109681502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6157 + ... + 16039.

It is an arithmetic number, because the mean of its divisors is an integer number (10674720).

Almost surely, 2^109681534 is an apocalyptic number.

109681534 is a deficient number, since it is larger than the sum of its proper divisors (61113986).

109681534 is a wasteful number, since it uses less digits than its factorization.

109681534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10095.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 109681534 is about 10472.8952061978. The cubic root of 109681534 is about 478.6791435060.

It can be divided in two parts, 109681 and 534, that added together give a triangular number (110215 = T₄₆₉).

The spelling of 109681534 in words is "one hundred nine million, six hundred eighty-one thousand, five hundred thirty-four".