109018385 has 24 divisors (see below), whose sum is σ = 155906856. Its totient is φ = 72925440.

The previous prime is 109018381. The next prime is 109018387. The reversal of 109018385 is 583810901.

It can be written as a sum of positive squares in 4 ways, for example, as 379456 + 108638929 = 616^2 + 10423^2 .

It is not a de Polignac number, because 109018385 - 2² = 109018381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (109018381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4619 + ... + 15471.

It is an arithmetic number, because the mean of its divisors is an integer number (6496119).

Almost surely, 2^109018385 is an apocalyptic number.

It is an amenable number.

109018385 is a deficient number, since it is larger than the sum of its proper divisors (46888471).

109018385 is a wasteful number, since it uses less digits than its factorization.

109018385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913 (or 10906 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 109018385 is about 10441.1869535987. The cubic root of 109018385 is about 477.7124736276.

The spelling of 109018385 in words is "one hundred nine million, eighteen thousand, three hundred eighty-five".