109878155 has 8 divisors (see below), whose sum is σ = 135069984. Its totient is φ = 85758400.

The previous prime is 109878143. The next prime is 109878163. The reversal of 109878155 is 551878901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109878155 - 2⁶ = 109878091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267791 + ... + 268200.

It is an arithmetic number, because the mean of its divisors is an integer number (16883748).

Almost surely, 2^109878155 is an apocalyptic number.

109878155 is a deficient number, since it is larger than the sum of its proper divisors (25191829).

109878155 is an equidigital number, since it uses as much as digits as its factorization.

109878155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536037.

The product of its (nonzero) digits is 100800, while the sum is 44.

The square root of 109878155 is about 10482.2781397938. The cubic root of 109878155 is about 478.9650080566.

The spelling of 109878155 in words is "one hundred nine million, eight hundred seventy-eight thousand, one hundred fifty-five".