1630122631 has 16 divisors (see below), whose sum is σ = 1779978240. Its totient is φ = 1488231360.

The previous prime is 1630122607. The next prime is 1630122661. The reversal of 1630122631 is 1362210361.

It is a cyclic number.

It is not a de Polignac number, because 1630122631 - 2¹⁹ = 1629598343 is a prime.

It is a super-2 number, since 2×1630122631² = 5314599584196724322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1630122596 and 1630122605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630122601) 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, 36390 + ... + 67708.

It is an arithmetic number, because the mean of its divisors is an integer number (111248640).

Almost surely, 2^1630122631 is an apocalyptic number.

1630122631 is a deficient number, since it is larger than the sum of its proper divisors (149855609).

1630122631 is a wasteful number, since it uses less digits than its factorization.

1630122631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31446.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1630122631 is about 40374.7771634718. Note that the first 3 decimals coincide. The cubic root of 1630122631 is about 1176.9014346524.

Adding to 1630122631 its reverse (1362210361), we get a palindrome (2992332992).

The spelling of 1630122631 in words is "one billion, six hundred thirty million, one hundred twenty-two thousand, six hundred thirty-one".