1631116801 has 4 divisors (see below), whose sum is σ = 1683733504. Its totient is φ = 1578500100.

The previous prime is 1631116787. The next prime is 1631116813. The reversal of 1631116801 is 1086111361.

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 1631116801 - 2¹¹ = 1631114753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1631116801.

It is not an unprimeable number, because it can be changed into a prime (1631114801) by changing a digit.

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, 26308305 + ... + 26308366.

It is an arithmetic number, because the mean of its divisors is an integer number (420933376).

Almost surely, 2^1631116801 is an apocalyptic number.

It is an amenable number.

1631116801 is a deficient number, since it is larger than the sum of its proper divisors (52616703).

1631116801 is an equidigital number, since it uses as much as digits as its factorization.

1631116801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52616702.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1631116801 is about 40387.0870576228. The cubic root of 1631116801 is about 1177.1406400346.

The spelling of 1631116801 in words is "one billion, six hundred thirty-one million, one hundred sixteen thousand, eight hundred one".