109778951 has 2 divisors, whose sum is σ = 109778952. Its totient is φ = 109778950.

The previous prime is 109778939. The next prime is 109778959. The reversal of 109778951 is 159877901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109778951 - 2¹⁴ = 109762567 is a prime.

It is a super-3 number, since 3×109778951³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109778896 and 109778905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109778959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54889475 + 54889476.

It is an arithmetic number, because the mean of its divisors is an integer number (54889476).

Almost surely, 2^109778951 is an apocalyptic number.

109778951 is a deficient number, since it is larger than the sum of its proper divisors (1).

109778951 is an equidigital number, since it uses as much as digits as its factorization.

109778951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 109778951 is about 10477.5450846083. The cubic root of 109778951 is about 478.8208193971.

The spelling of 109778951 in words is "one hundred nine million, seven hundred seventy-eight thousand, nine hundred fifty-one".