109691541 has 12 divisors (see below), whose sum is σ = 166782720. Its totient is φ = 69278760.

The previous prime is 109691539. The next prime is 109691563. The reversal of 109691541 is 145196901.

109691541 is a `hidden beast` number, since 109 + 6 + 9 + 1 + 541 = 666.

It is not a de Polignac number, because 109691541 - 2¹ = 109691539 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 109691496 and 109691505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109691341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320565 + ... + 320906.

It is an arithmetic number, because the mean of its divisors is an integer number (13898560).

Almost surely, 2^109691541 is an apocalyptic number.

It is an amenable number.

109691541 is a deficient number, since it is larger than the sum of its proper divisors (57091179).

109691541 is a wasteful number, since it uses less digits than its factorization.

109691541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641496 (or 641493 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 109691541 is about 10473.3729523969. The cubic root of 109691541 is about 478.6937007924.

The spelling of 109691541 in words is "one hundred nine million, six hundred ninety-one thousand, five hundred forty-one".