1601731429 has 2 divisors, whose sum is σ = 1601731430. Its totient is φ = 1601731428.

The previous prime is 1601731423. The next prime is 1601731433. The reversal of 1601731429 is 9241371061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1583880804 + 17850625 = 39798^2 + 4225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601731429 - 2⁷ = 1601731301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1601731394 and 1601731403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601731423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800865714 + 800865715.

It is an arithmetic number, because the mean of its divisors is an integer number (800865715).

Almost surely, 2^1601731429 is an apocalyptic number.

It is an amenable number.

1601731429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601731429 is an equidigital number, since it uses as much as digits as its factorization.

1601731429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1601731429 is about 40021.6370104972. The cubic root of 1601731429 is about 1170.0288372857.

The spelling of 1601731429 in words is "one billion, six hundred one million, seven hundred thirty-one thousand, four hundred twenty-nine".