1663404042 has 32 divisors (see below), whose sum is σ = 3467748672. Its totient is φ = 531425664.

The previous prime is 1663404019. The next prime is 1663404097. The reversal of 1663404042 is 2404043661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41043 + ... + 70790.

It is an arithmetic number, because the mean of its divisors is an integer number (108367146).

Almost surely, 2^1663404042 is an apocalyptic number.

1663404042 is an abundant number, since it is smaller than the sum of its proper divisors (1804344630).

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

1663404042 is a wasteful number, since it uses less digits than its factorization.

1663404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111942.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1663404042 is about 40784.8506433455. The cubic root of 1663404042 is about 1184.8569422631.

The spelling of 1663404042 in words is "one billion, six hundred sixty-three million, four hundred four thousand, forty-two".