1988800063 has 4 divisors (see below), whose sum is σ = 2105788320. Its totient is φ = 1871811808.

The previous prime is 1988800057. The next prime is 1988800081. The reversal of 1988800063 is 3600088891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3600088891 = 7 ⋅514298413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1988800063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1988799992 and 1988800019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988800003) 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 3 ways as a sum of consecutive naturals, for example, 58494103 + ... + 58494136.

It is an arithmetic number, because the mean of its divisors is an integer number (526447080).

Almost surely, 2^1988800063 is an apocalyptic number.

1988800063 is a deficient number, since it is larger than the sum of its proper divisors (116988257).

1988800063 is a wasteful number, since it uses less digits than its factorization.

1988800063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116988256.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 1988800063 is about 44595.9646492819. The cubic root of 1988800063 is about 1257.5648067129.

The spelling of 1988800063 in words is "one billion, nine hundred eighty-eight million, eight hundred thousand, sixty-three".