919918055 has 16 divisors (see below), whose sum is σ = 1273397760. Its totient is φ = 624903072.

The previous prime is 919918037. The next prime is 919918057. The reversal of 919918055 is 550819919.

It is a cyclic number.

It is not a de Polignac number, because 919918055 - 2¹⁶ = 919852519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919918057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119075 + ... + 126564.

It is an arithmetic number, because the mean of its divisors is an integer number (79587360).

Almost surely, 2^919918055 is an apocalyptic number.

919918055 is a deficient number, since it is larger than the sum of its proper divisors (353479705).

919918055 is a wasteful number, since it uses less digits than its factorization.

919918055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245758.

The product of its (nonzero) digits is 145800, while the sum is 47.

The square root of 919918055 is about 30330.1509228029. The cubic root of 919918055 is about 972.5599489878.

The spelling of 919918055 in words is "nine hundred nineteen million, nine hundred eighteen thousand, fifty-five".