1631663853 has 16 divisors (see below), whose sum is σ = 2231387136. Its totient is φ = 1059977520.

The previous prime is 1631663849. The next prime is 1631663863. The reversal of 1631663853 is 3583661361.

It is a happy number.

It is not a de Polignac number, because 1631663853 - 2² = 1631663849 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631663833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40926 + ... + 70272.

It is an arithmetic number, because the mean of its divisors is an integer number (139461696).

Almost surely, 2^1631663853 is an apocalyptic number.

It is an amenable number.

1631663853 is a deficient number, since it is larger than the sum of its proper divisors (599723283).

1631663853 is a wasteful number, since it uses less digits than its factorization.

1631663853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29824.

The product of its digits is 233280, while the sum is 42.

The square root of 1631663853 is about 40393.8591001157. The cubic root of 1631663853 is about 1177.2722237371.

The spelling of 1631663853 in words is "one billion, six hundred thirty-one million, six hundred sixty-three thousand, eight hundred fifty-three".