109481643 has 12 divisors (see below), whose sum is σ = 158314728. Its totient is φ = 72907200.

The previous prime is 109481611. The next prime is 109481657. The reversal of 109481643 is 346184901.

109481643 is a `hidden beast` number, since 1 + 0 + 9 + 4 + 8 + 1 + 643 = 666.

It is not a de Polignac number, because 109481643 - 2⁵ = 109481611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109481598 and 109481607.

It is not an unprimeable number, because it can be changed into a prime (109481843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2568 + ... + 15018.

It is an arithmetic number, because the mean of its divisors is an integer number (13192894).

Almost surely, 2^109481643 is an apocalyptic number.

109481643 is a deficient number, since it is larger than the sum of its proper divisors (48833085).

109481643 is a wasteful number, since it uses less digits than its factorization.

109481643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13434 (or 13431 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 109481643 is about 10463.3476000752. The cubic root of 109481643 is about 478.3881743249.

The spelling of 109481643 in words is "one hundred nine million, four hundred eighty-one thousand, six hundred forty-three".