109081637 has 8 divisors (see below), whose sum is σ = 126373056. Its totient is φ = 92217312.

The previous prime is 109081633. The next prime is 109081649. The reversal of 109081637 is 736180901.

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 109081637 - 2² = 109081633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109081597 and 109081606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109081633) 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, 106223 + ... + 107244.

It is an arithmetic number, because the mean of its divisors is an integer number (15796632).

Almost surely, 2^109081637 is an apocalyptic number.

It is an amenable number.

109081637 is a deficient number, since it is larger than the sum of its proper divisors (17291419).

109081637 is an equidigital number, since it uses as much as digits as its factorization.

109081637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213547.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 109081637 is about 10444.2154803508. The cubic root of 109081637 is about 477.8048446757.

The spelling of 109081637 in words is "one hundred nine million, eighty-one thousand, six hundred thirty-seven".