1663442235 has 96 divisors (see below), whose sum is σ = 3561038208. Its totient is φ = 699494400.

The previous prime is 1663442213. The next prime is 1663442239. The reversal of 1663442235 is 5322443661.

1663442235 is a `hidden beast` number, since 16 + 634 + 4 + 2 + 2 + 3 + 5 = 666.

1663442235 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1663442235 - 2⁷ = 1663442107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1663442235.

It is not an unprimeable number, because it can be changed into a prime (1663442239) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1641589 + ... + 1642601.

It is an arithmetic number, because the mean of its divisors is an integer number (37094148).

Almost surely, 2^1663442235 is an apocalyptic number.

1663442235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1663442235 is an abundant number, since it is smaller than the sum of its proper divisors (1897595973).

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

1663442235 is a wasteful number, since it uses less digits than its factorization.

1663442235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1442 counting only the distinct ones).

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

The square root of 1663442235 is about 40785.3188659841. The cubic root of 1663442235 is about 1184.8660105940.

Adding to 1663442235 its reverse (5322443661), we get a palindrome (6985885896).

The spelling of 1663442235 in words is "one billion, six hundred sixty-three million, four hundred forty-two thousand, two hundred thirty-five".