109271643 has 32 divisors (see below), whose sum is σ = 167591424. Its totient is φ = 62802432.

The previous prime is 109271633. The next prime is 109271647. The reversal of 109271643 is 346172901.

It is not a de Polignac number, because 109271643 - 2⁹ = 109271131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109271647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37155 + ... + 39987.

It is an arithmetic number, because the mean of its divisors is an integer number (5237232).

Almost surely, 2^109271643 is an apocalyptic number.

109271643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

109271643 is a deficient number, since it is larger than the sum of its proper divisors (58319781).

109271643 is a wasteful number, since it uses less digits than its factorization.

109271643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 109271643 is about 10453.3077540078. The cubic root of 109271643 is about 478.0821083486.

The spelling of 109271643 in words is "one hundred nine million, two hundred seventy-one thousand, six hundred forty-three".