220109743 has 4 divisors (see below), whose sum is σ = 251554000. Its totient is φ = 188665488.

The previous prime is 220109731. The next prime is 220109783. The reversal of 220109743 is 347901022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220109743 - 2⁹ = 220109231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220109713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15722118 + ... + 15722131.

It is an arithmetic number, because the mean of its divisors is an integer number (62888500).

Almost surely, 2^220109743 is an apocalyptic number.

220109743 is a deficient number, since it is larger than the sum of its proper divisors (31444257).

220109743 is an equidigital number, since it uses as much as digits as its factorization.

220109743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31444256.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 220109743 is about 14836.0959487326. The cubic root of 220109743 is about 603.7814354363.

The spelling of 220109743 in words is "two hundred twenty million, one hundred nine thousand, seven hundred forty-three".