1631646041 has 2 divisors, whose sum is σ = 1631646042. Its totient is φ = 1631646040.

The previous prime is 1631645993. The next prime is 1631646073. The reversal of 1631646041 is 1406461361.

It is an a-pointer prime, because the next prime (1631646073) can be obtained adding 1631646041 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1445596441 + 186049600 = 38021^2 + 13640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1631646041 is a prime.

It is a super-2 number, since 2×1631646041² = 5324537606221947362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1631645989 and 1631646007.

It is not a weakly prime, because it can be changed into another prime (1631646941) 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 as a sum of consecutive naturals, namely, 815823020 + 815823021.

It is an arithmetic number, because the mean of its divisors is an integer number (815823021).

Almost surely, 2^1631646041 is an apocalyptic number.

It is an amenable number.

1631646041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631646041 is an equidigital number, since it uses as much as digits as its factorization.

1631646041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1631646041 is about 40393.6386204561. The cubic root of 1631646041 is about 1177.2679398381.

The spelling of 1631646041 in words is "one billion, six hundred thirty-one million, six hundred forty-six thousand, forty-one".