1663059513 has 4 divisors (see below), whose sum is σ = 2217412688. Its totient is φ = 1108706340.

The previous prime is 1663059509. The next prime is 1663059547. The reversal of 1663059513 is 3159503661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1663059513 - 2² = 1663059509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663059913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277176583 + ... + 277176588.

It is an arithmetic number, because the mean of its divisors is an integer number (554353172).

Almost surely, 2^1663059513 is an apocalyptic number.

It is an amenable number.

1663059513 is a deficient number, since it is larger than the sum of its proper divisors (554353175).

1663059513 is an equidigital number, since it uses as much as digits as its factorization.

1663059513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554353174.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 1663059513 is about 40780.6266871906. The cubic root of 1663059513 is about 1184.7751329623.

The spelling of 1663059513 in words is "one billion, six hundred sixty-three million, fifty-nine thousand, five hundred thirteen".