1663531359 has 16 divisors (see below), whose sum is σ = 2603417088. Its totient is φ = 924897312.

The previous prime is 1663531343. The next prime is 1663531367. The reversal of 1663531359 is 9531353661.

It is not a de Polignac number, because 1663531359 - 2⁴ = 1663531343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1663531359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663531369) 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 15 ways as a sum of consecutive naturals, for example, 1069707 + ... + 1071260.

It is an arithmetic number, because the mean of its divisors is an integer number (162713568).

Almost surely, 2^1663531359 is an apocalyptic number.

1663531359 is a deficient number, since it is larger than the sum of its proper divisors (939885729).

1663531359 is a wasteful number, since it uses less digits than its factorization.

1663531359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141014.

The product of its digits is 218700, while the sum is 42.

The square root of 1663531359 is about 40786.4114503838. The cubic root of 1663531359 is about 1184.8871711549.

The spelling of 1663531359 in words is "one billion, six hundred sixty-three million, five hundred thirty-one thousand, three hundred fifty-nine".