1601944429 has 2 divisors, whose sum is σ = 1601944430. Its totient is φ = 1601944428.

The previous prime is 1601944417. The next prime is 1601944441. The reversal of 1601944429 is 9244491061.

It is a balanced prime because it is at equal distance from previous prime (1601944417) and next prime (1601944441).

It can be written as a sum of positive squares in only one way, i.e., 1104565225 + 497379204 = 33235^2 + 22302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1601944429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1601944391 and 1601944400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601944469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800972214 + 800972215.

It is an arithmetic number, because the mean of its divisors is an integer number (800972215).

Almost surely, 2^1601944429 is an apocalyptic number.

It is an amenable number.

1601944429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601944429 is an equidigital number, since it uses as much as digits as its factorization.

1601944429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1601944429 is about 40024.2979826005. The cubic root of 1601944429 is about 1170.0806988924.

The spelling of 1601944429 in words is "one billion, six hundred one million, nine hundred forty-four thousand, four hundred twenty-nine".