1663718384 has 10 divisors (see below), whose sum is σ = 3223454400. Its totient is φ = 831859184.

The previous prime is 1663718369. The next prime is 1663718401. The reversal of 1663718384 is 4838173661.

It is a super-2 number, since 2×1663718384² = 5535917722519142912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51991184 + ... + 51991215.

It is an arithmetic number, because the mean of its divisors is an integer number (322345440).

Almost surely, 2^1663718384 is an apocalyptic number.

It is an amenable number.

1663718384 is a deficient number, since it is larger than the sum of its proper divisors (1559736016).

1663718384 is a wasteful number, since it uses less digits than its factorization.

1663718384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103982407 (or 103982401 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 1663718384 is about 40788.7041225877. The cubic root of 1663718384 is about 1184.9315737282.

The spelling of 1663718384 in words is "one billion, six hundred sixty-three million, seven hundred eighteen thousand, three hundred eighty-four".