1601622663 has 8 divisors (see below), whose sum is σ = 2193213168. Its totient is φ = 1038890304.

The previous prime is 1601622623. The next prime is 1601622703. The reversal of 1601622663 is 3662261061.

It is an interprime number because it is at equal distance from previous prime (1601622623) and next prime (1601622703).

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

It is not a de Polignac number, because 1601622663 - 2⁹ = 1601622151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601622623) 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 7 ways as a sum of consecutive naturals, for example, 7214406 + ... + 7214627.

It is an arithmetic number, because the mean of its divisors is an integer number (274151646).

Almost surely, 2^1601622663 is an apocalyptic number.

1601622663 is a deficient number, since it is larger than the sum of its proper divisors (591590505).

1601622663 is a wasteful number, since it uses less digits than its factorization.

1601622663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429073.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1601622663 is about 40020.2781474592. The cubic root of 1601622663 is about 1170.0023529794.

The spelling of 1601622663 in words is "one billion, six hundred one million, six hundred twenty-two thousand, six hundred sixty-three".