1663432542 has 48 divisors (see below), whose sum is σ = 3764730528. Its totient is φ = 529816320.

The previous prime is 1663432523. The next prime is 1663432543. The reversal of 1663432542 is 2452343661.

1663432542 is a `hidden beast` number, since 1 + 66 + 343 + 254 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1663432497 and 1663432506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663432543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 611778 + ... + 614490.

It is an arithmetic number, because the mean of its divisors is an integer number (78431886).

Almost surely, 2^1663432542 is an apocalyptic number.

1663432542 is an abundant number, since it is smaller than the sum of its proper divisors (2101297986).

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

1663432542 is a wasteful number, since it uses less digits than its factorization.

1663432542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225 (or 4222 counting only the distinct ones).

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

The square root of 1663432542 is about 40785.2000362877. The cubic root of 1663432542 is about 1184.8637091558.

The spelling of 1663432542 in words is "one billion, six hundred sixty-three million, four hundred thirty-two thousand, five hundred forty-two".