1911385055 has 8 divisors (see below), whose sum is σ = 2428583472. Its totient is φ = 1439160448.

The previous prime is 1911385043. The next prime is 1911385079. The reversal of 1911385055 is 5505831191.

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

It is a cyclic number.

It is not a de Polignac number, because 1911385055 - 2¹² = 1911380959 is a prime.

It is a Duffinian number.

It is a congruent 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, 11243357 + ... + 11243526.

It is an arithmetic number, because the mean of its divisors is an integer number (303572934).

Almost surely, 2^1911385055 is an apocalyptic number.

1911385055 is a deficient number, since it is larger than the sum of its proper divisors (517198417).

1911385055 is a wasteful number, since it uses less digits than its factorization.

1911385055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22486905.

The product of its (nonzero) digits is 27000, while the sum is 38.

The square root of 1911385055 is about 43719.3899202631. The cubic root of 1911385055 is about 1241.0312819817.

The spelling of 1911385055 in words is "one billion, nine hundred eleven million, three hundred eighty-five thousand, fifty-five".