109778319 has 12 divisors (see below), whose sum is σ = 181221456. Its totient is φ = 62730432.

The previous prime is 109778309. The next prime is 109778329. The reversal of 109778319 is 913877901.

It is an interprime number because it is at equal distance from previous prime (109778309) and next prime (109778329).

It is not a de Polignac number, because 109778319 - 2⁴ = 109778303 is a prime.

It is a super-2 number, since 2×109778319² = 24102558644931522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109778309) 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, 871194 + ... + 871319.

It is an arithmetic number, because the mean of its divisors is an integer number (15101788).

Almost surely, 2^109778319 is an apocalyptic number.

109778319 is a deficient number, since it is larger than the sum of its proper divisors (71443137).

109778319 is a wasteful number, since it uses less digits than its factorization.

109778319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742526 (or 1742523 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 109778319 is about 10477.5149248283. The cubic root of 109778319 is about 478.8199005344.

The spelling of 109778319 in words is "one hundred nine million, seven hundred seventy-eight thousand, three hundred nineteen".