109159581 has 8 divisors (see below), whose sum is σ = 146906784. Its totient is φ = 72092720.

The previous prime is 109159573. The next prime is 109159591. The reversal of 109159581 is 185951901.

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

It is a cyclic number.

It is not a de Polignac number, because 109159581 - 2³ = 109159573 is a prime.

It is a super-2 number, since 2×109159581² = 23831628248191122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109159571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169710 + ... + 170351.

It is an arithmetic number, because the mean of its divisors is an integer number (18363348).

Almost surely, 2^109159581 is an apocalyptic number.

It is an amenable number.

109159581 is a deficient number, since it is larger than the sum of its proper divisors (37747203).

109159581 is a wasteful number, since it uses less digits than its factorization.

109159581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340171.

The product of its (nonzero) digits is 16200, while the sum is 39.

The square root of 109159581 is about 10447.9462575187. The cubic root of 109159581 is about 477.9186223165.

The spelling of 109159581 in words is "one hundred nine million, one hundred fifty-nine thousand, five hundred eighty-one".