109637381 has 4 divisors (see below), whose sum is σ = 125299872. Its totient is φ = 93974892.

The previous prime is 109637357. The next prime is 109637383. The reversal of 109637381 is 183736901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109637381 - 2¹⁰ = 109636357 is a prime.

It is a super-2 number, since 2×109637381² = 24040710625078322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109637383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831235 + ... + 7831248.

It is an arithmetic number, because the mean of its divisors is an integer number (31324968).

Almost surely, 2^109637381 is an apocalyptic number.

It is an amenable number.

109637381 is a deficient number, since it is larger than the sum of its proper divisors (15662491).

109637381 is an equidigital number, since it uses as much as digits as its factorization.

109637381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15662490.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 109637381 is about 10470.7870286813. The cubic root of 109637381 is about 478.6149031059.

The spelling of 109637381 in words is "one hundred nine million, six hundred thirty-seven thousand, three hundred eighty-one".