1663454430 has 96 divisors (see below), whose sum is σ = 4728054240. Its totient is φ = 402416640.

The previous prime is 1663454423. The next prime is 1663454453. The reversal of 1663454430 is 344543661.

1663454430 is a `hidden beast` number, since 16 + 634 + 5 + 4 + 4 + 3 + 0 = 666.

1663454430 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 561834 + ... + 564786.

It is an arithmetic number, because the mean of its divisors is an integer number (49250565).

Almost surely, 2^1663454430 is an apocalyptic number.

1663454430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663454430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2364027120).

1663454430 is an abundant number, since it is smaller than the sum of its proper divisors (3064599810).

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

1663454430 is a wasteful number, since it uses less digits than its factorization.

1663454430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3543 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 1663454430 is about 40785.4683680352. The cubic root of 1663454430 is about 1184.8689060769.

The spelling of 1663454430 in words is "one billion, six hundred sixty-three million, four hundred fifty-four thousand, four hundred thirty".