1663015055 has 16 divisors (see below), whose sum is σ = 2275547904. Its totient is φ = 1155832320.

The previous prime is 1663015051. The next prime is 1663015091. The reversal of 1663015055 is 5505103661.

It is not a de Polignac number, because 1663015055 - 2² = 1663015051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663015051) 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, 751391 + ... + 753600.

It is an arithmetic number, because the mean of its divisors is an integer number (142221744).

Almost surely, 2^1663015055 is an apocalyptic number.

1663015055 is a deficient number, since it is larger than the sum of its proper divisors (612532849).

1663015055 is a wasteful number, since it uses less digits than its factorization.

1663015055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505026.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1663015055 is about 40780.0815962891. The cubic root of 1663015055 is about 1184.7645754724.

The spelling of 1663015055 in words is "one billion, six hundred sixty-three million, fifteen thousand, fifty-five".