1663530842 has 8 divisors (see below), whose sum is σ = 2537589600. Its totient is φ = 817667644.

The previous prime is 1663530833. The next prime is 1663530871. The reversal of 1663530842 is 2480353661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1663530796 and 1663530805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7048742 + ... + 7048977.

It is an arithmetic number, because the mean of its divisors is an integer number (317198700).

Almost surely, 2^1663530842 is an apocalyptic number.

1663530842 is a deficient number, since it is larger than the sum of its proper divisors (874058758).

1663530842 is a wasteful number, since it uses less digits than its factorization.

1663530842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097780.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 1663530842 is about 40786.4051124882. The cubic root of 1663530842 is about 1184.8870484067.

The spelling of 1663530842 in words is "one billion, six hundred sixty-three million, five hundred thirty thousand, eight hundred forty-two".