1626631241 has 2 divisors, whose sum is σ = 1626631242. Its totient is φ = 1626631240.

The previous prime is 1626631217. The next prime is 1626631291. The reversal of 1626631241 is 1421366261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864595216 + 762036025 = 29404^2 + 27605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1626631241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1626631198 and 1626631207.

It is not a weakly prime, because it can be changed into another prime (1626631291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813315620 + 813315621.

It is an arithmetic number, because the mean of its divisors is an integer number (813315621).

Almost surely, 2^1626631241 is an apocalyptic number.

It is an amenable number.

1626631241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626631241 is an equidigital number, since it uses as much as digits as its factorization.

1626631241 is an evil number, because the sum of its binary digits is even.

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

The square root of 1626631241 is about 40331.5167207979. The cubic root of 1626631241 is about 1176.0606065087.

The spelling of 1626631241 in words is "one billion, six hundred twenty-six million, six hundred thirty-one thousand, two hundred forty-one".