1631716623 has 16 divisors (see below), whose sum is σ = 2522461440. Its totient is φ = 1040514552.

The previous prime is 1631716621. The next prime is 1631716643. The reversal of 1631716623 is 3266171361.

1631716623 is a `hidden beast` number, since 1 + 6 + 3 + 17 + 16 + 623 = 666.

It is not a de Polignac number, because 1631716623 - 2¹ = 1631716621 is a prime.

It is a super-3 number, since 3×1631716623³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631716621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313161 + ... + 1314402.

It is an arithmetic number, because the mean of its divisors is an integer number (157653840).

Almost surely, 2^1631716623 is an apocalyptic number.

1631716623 is a deficient number, since it is larger than the sum of its proper divisors (890744817).

1631716623 is a wasteful number, since it uses less digits than its factorization.

1631716623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627595 (or 2627589 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 1631716623 is about 40394.5122881809. The cubic root of 1631716623 is about 1177.2849150737.

Adding to 1631716623 its reverse (3266171361), we get a palindrome (4897887984).

The spelling of 1631716623 in words is "one billion, six hundred thirty-one million, seven hundred sixteen thousand, six hundred twenty-three".