1663714953 has 12 divisors (see below), whose sum is σ = 2468094148. Its totient is φ = 1079166240.

The previous prime is 1663714939. The next prime is 1663714961. The reversal of 1663714953 is 3594173661.

It is a happy number.

1663714953 is a `hidden beast` number, since 1 + 6 + 637 + 1 + 4 + 9 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 571544649 + 1092170304 = 23907^2 + 33048^2 .

It is not a de Polignac number, because 1663714953 - 2⁴ = 1663714937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663714899 and 1663714908.

It is not an unprimeable number, because it can be changed into a prime (1663714903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2497738 + ... + 2498403.

Almost surely, 2^1663714953 is an apocalyptic number.

It is an amenable number.

1663714953 is a deficient number, since it is larger than the sum of its proper divisors (804379195).

1663714953 is a wasteful number, since it uses less digits than its factorization.

1663714953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996184 (or 4996181 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 1663714953 is about 40788.6620643531. The cubic root of 1663714953 is about 1184.9307591867.

The spelling of 1663714953 in words is "one billion, six hundred sixty-three million, seven hundred fourteen thousand, nine hundred fifty-three".