1663177485 has 64 divisors (see below), whose sum is σ = 2786918400. Its totient is φ = 846370560.

The previous prime is 1663177457. The next prime is 1663177487. The reversal of 1663177485 is 5847713661.

It is not a de Polignac number, because 1663177485 - 2⁶ = 1663177421 is a prime.

It is a super-2 number, since 2×1663177485² = 5532318693221850450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663177487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7458084 + ... + 7458306.

It is an arithmetic number, because the mean of its divisors is an integer number (43545600).

Almost surely, 2^1663177485 is an apocalyptic number.

1663177485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1663177485 is a deficient number, since it is larger than the sum of its proper divisors (1123740915).

1663177485 is a wasteful number, since it uses less digits than its factorization.

1663177485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its digits is 846720, while the sum is 48.

The square root of 1663177485 is about 40782.0730836479. The cubic root of 1663177485 is about 1184.8031469903.

The spelling of 1663177485 in words is "one billion, six hundred sixty-three million, one hundred seventy-seven thousand, four hundred eighty-five".