109163903 has 4 divisors (see below), whose sum is σ = 109444920. Its totient is φ = 108882888.

The previous prime is 109163891. The next prime is 109163909. The reversal of 109163903 is 309361901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309361901 = 53 ⋅5837017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109163903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109163903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109163909) 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, 139925 + ... + 140702.

It is an arithmetic number, because the mean of its divisors is an integer number (27361230).

Almost surely, 2^109163903 is an apocalyptic number.

109163903 is a deficient number, since it is larger than the sum of its proper divisors (281017).

109163903 is an equidigital number, since it uses as much as digits as its factorization.

109163903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281016.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 109163903 is about 10448.1530903792. The cubic root of 109163903 is about 477.9249297092.

The spelling of 109163903 in words is "one hundred nine million, one hundred sixty-three thousand, nine hundred three".