109983645 has 12 divisors (see below), whose sum is σ = 190638396. Its totient is φ = 58657920.

The previous prime is 109983617. The next prime is 109983673. The reversal of 109983645 is 546389901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (109983617) and next prime (109983673).

It can be written as a sum of positive squares in 2 ways, for example, as 50168889 + 59814756 = 7083^2 + 7734^2 .

It is not a de Polignac number, because 109983645 - 2⁵ = 109983613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2444081 = 109983645 / (1 + 0 + 9 + 9 + 8 + 3 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 109983645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1221996 + ... + 1222085.

It is an arithmetic number, because the mean of its divisors is an integer number (15886533).

Almost surely, 2^109983645 is an apocalyptic number.

109983645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109983645 is a deficient number, since it is larger than the sum of its proper divisors (80654751).

109983645 is a wasteful number, since it uses less digits than its factorization.

109983645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444092 (or 2444089 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 109983645 is about 10487.3087586854. The cubic root of 109983645 is about 479.1182379621.

The spelling of 109983645 in words is "one hundred nine million, nine hundred eighty-three thousand, six hundred forty-five".