1663393201 has 8 divisors (see below), whose sum is σ = 1736357864. Its totient is φ = 1591902720.

The previous prime is 1663393163. The next prime is 1663393219. The reversal of 1663393201 is 1023933661.

It can be written as a sum of positive squares in 4 ways, for example, as 134583201 + 1528810000 = 11601^2 + 39100^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663393201 is a prime.

It is a super-2 number, since 2×1663393201² = 5533753882266052802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663393231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366240 + ... + 370753.

It is an arithmetic number, because the mean of its divisors is an integer number (217044733).

Almost surely, 2^1663393201 is an apocalyptic number.

It is an amenable number.

1663393201 is a deficient number, since it is larger than the sum of its proper divisors (72964663).

1663393201 is an equidigital number, since it uses as much as digits as its factorization.

1663393201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737091.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1663393201 is about 40784.7177383882. The cubic root of 1663393201 is about 1184.8543682118.

The spelling of 1663393201 in words is "one billion, six hundred sixty-three million, three hundred ninety-three thousand, two hundred one".