1663516068 has 48 divisors (see below), whose sum is σ = 3910604544. Its totient is φ = 550368000.

The previous prime is 1663516051. The next prime is 1663516069. The reversal of 1663516068 is 8606153661.

1663516068 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1663516069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774896 + ... + 1775832.

It is an arithmetic number, because the mean of its divisors is an integer number (81470928).

Almost surely, 2^1663516068 is an apocalyptic number.

It is an amenable number.

1663516068 is an abundant number, since it is smaller than the sum of its proper divisors (2247088476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663516068 is a wasteful number, since it uses less digits than its factorization.

1663516068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1663516068 is about 40786.2239978157. The cubic root of 1663516068 is about 1184.8835406923.

The spelling of 1663516068 in words is "one billion, six hundred sixty-three million, five hundred sixteen thousand, sixty-eight".