1899727055 has 16 divisors (see below), whose sum is σ = 2313196704. Its totient is φ = 1497569280.

The previous prime is 1899727051. The next prime is 1899727069. The reversal of 1899727055 is 5507279981.

It is a happy number.

It is not a de Polignac number, because 1899727055 - 2² = 1899727051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1899726988 and 1899727006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899727051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104600 + ... + 121410.

It is an arithmetic number, because the mean of its divisors is an integer number (144574794).

Almost surely, 2^1899727055 is an apocalyptic number.

1899727055 is a deficient number, since it is larger than the sum of its proper divisors (413469649).

1899727055 is a wasteful number, since it uses less digits than its factorization.

1899727055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17146.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The square root of 1899727055 is about 43585.8584290822. The cubic root of 1899727055 is about 1238.5030181241.

The spelling of 1899727055 in words is "one billion, eight hundred ninety-nine million, seven hundred twenty-seven thousand, fifty-five".