1631479449629 has 2 divisors, whose sum is σ = 1631479449630. Its totient is φ = 1631479449628.

The previous prime is 1631479449533. The next prime is 1631479449671. The reversal of 1631479449629 is 9269449741361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1607121604729 + 24357844900 = 1267723^2 + 156070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631479449629 - 2⁸ = 1631479449373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1631479449529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815739724814 + 815739724815.

It is an arithmetic number, because the mean of its divisors is an integer number (815739724815).

Almost surely, 2^{1631479449629} is an apocalyptic number.

It is an amenable number.

1631479449629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631479449629 is an equidigital number, since it uses as much as digits as its factorization.

1631479449629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70543872, while the sum is 65.

The spelling of 1631479449629 in words is "one trillion, six hundred thirty-one billion, four hundred seventy-nine million, four hundred forty-nine thousand, six hundred twenty-nine".