1663203434 has 8 divisors (see below), whose sum is σ = 2509744608. Its totient is φ = 826621900.

The previous prime is 1663203403. The next prime is 1663203463. The reversal of 1663203434 is 4343023661.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1663203434.

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, 2489492 + ... + 2490159.

It is an arithmetic number, because the mean of its divisors is an integer number (313718076).

Almost surely, 2^1663203434 is an apocalyptic number.

1663203434 is a deficient number, since it is larger than the sum of its proper divisors (846541174).

1663203434 is a wasteful number, since it uses less digits than its factorization.

1663203434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979820.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 1663203434 is about 40782.3912246450. The cubic root of 1663203434 is about 1184.8093087494.

The spelling of 1663203434 in words is "one billion, six hundred sixty-three million, two hundred three thousand, four hundred thirty-four".