1663117156 has 12 divisors (see below), whose sum is σ = 2912318640. Its totient is φ = 831026120.

The previous prime is 1663117129. The next prime is 1663117217. The reversal of 1663117156 is 6517113661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126046 + ... + 138613.

It is an arithmetic number, because the mean of its divisors is an integer number (242693220).

Almost surely, 2^1663117156 is an apocalyptic number.

It is an amenable number.

1663117156 is a deficient number, since it is larger than the sum of its proper divisors (1249201484).

1663117156 is a wasteful number, since it uses less digits than its factorization.

1663117156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266234 (or 266232 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 1663117156 is about 40781.3334259683. Note that the first 3 decimals coincide. The cubic root of 1663117156 is about 1184.7888212285.

The spelling of 1663117156 in words is "one billion, six hundred sixty-three million, one hundred seventeen thousand, one hundred fifty-six".