1663459716 has 24 divisors (see below), whose sum is σ = 3911971840. Its totient is φ = 550120032.

The previous prime is 1663459711. The next prime is 1663459717. The reversal of 1663459716 is 6179543661.

It is not an unprimeable number, because it can be changed into a prime (1663459711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544231 + ... + 547278.

Almost surely, 2^1663459716 is an apocalyptic number.

It is an amenable number.

1663459716 is an abundant number, since it is smaller than the sum of its proper divisors (2248512124).

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

1663459716 is a wasteful number, since it uses less digits than its factorization.

1663459716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091643 (or 1091641 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 1663459716 is about 40785.5331704760. The cubic root of 1663459716 is about 1184.8701611379.

The spelling of 1663459716 in words is "one billion, six hundred sixty-three million, four hundred fifty-nine thousand, seven hundred sixteen".