1663226829 has 12 divisors (see below), whose sum is σ = 2620842432. Its totient is φ = 1008016200.

The previous prime is 1663226809. The next prime is 1663226861. The reversal of 1663226829 is 9286223661.

1663226829 is a `hidden beast` number, since 1 + 6 + 632 + 2 + 6 + 8 + 2 + 9 = 666.

It is not a de Polignac number, because 1663226829 - 2¹⁶ = 1663161293 is a prime.

1663226829 is a modest number, since divided by 26829 gives 16632 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663226809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8400037 + ... + 8400234.

It is an arithmetic number, because the mean of its divisors is an integer number (218403536).

Almost surely, 2^1663226829 is an apocalyptic number.

It is an amenable number.

1663226829 is a deficient number, since it is larger than the sum of its proper divisors (957615603).

1663226829 is a wasteful number, since it uses less digits than its factorization.

1663226829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16800288 (or 16800285 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 1663226829 is about 40782.6780508588. The cubic root of 1663226829 is about 1184.8148639896.

The spelling of 1663226829 in words is "one billion, six hundred sixty-three million, two hundred twenty-six thousand, eight hundred twenty-nine".