1663036401 has 16 divisors (see below), whose sum is σ = 2388741824. Its totient is φ = 1023067584.

The previous prime is 1663036357. The next prime is 1663036409. The reversal of 1663036401 is 1046303661.

It is not a de Polignac number, because 1663036401 - 2¹⁰ = 1663035377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663036409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165030 + ... + 174816.

It is an arithmetic number, because the mean of its divisors is an integer number (149296364).

Almost surely, 2^1663036401 is an apocalyptic number.

It is an amenable number.

1663036401 is a deficient number, since it is larger than the sum of its proper divisors (725705423).

1663036401 is a wasteful number, since it uses less digits than its factorization.

1663036401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14160.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1663036401 is about 40780.3433163577. The cubic root of 1663036401 is about 1184.7696445539.

The spelling of 1663036401 in words is "one billion, six hundred sixty-three million, thirty-six thousand, four hundred one".