1663093841 has 4 divisors (see below), whose sum is σ = 1663254384. Its totient is φ = 1662933300.

The previous prime is 1663093781. The next prime is 1663093853. The reversal of 1663093841 is 1483903661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1663093841 - 2⁶ = 1663093777 is a prime.

It is a super-2 number, since 2×1663093841² = 5531762247944266562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663093891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63575 + ... + 85836.

It is an arithmetic number, because the mean of its divisors is an integer number (415813596).

Almost surely, 2^1663093841 is an apocalyptic number.

It is an amenable number.

1663093841 is a deficient number, since it is larger than the sum of its proper divisors (160543).

1663093841 is a wasteful number, since it uses less digits than its factorization.

1663093841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160542.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1663093841 is about 40781.0475711451. The cubic root of 1663093841 is about 1184.7832847414.

The spelling of 1663093841 in words is "one billion, six hundred sixty-three million, ninety-three thousand, eight hundred forty-one".