1601731433 has 2 divisors, whose sum is σ = 1601731434. Its totient is φ = 1601731432.

The previous prime is 1601731429. The next prime is 1601731457. The reversal of 1601731433 is 3341371061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1375890649 + 225840784 = 37093^2 + 15028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601731433 - 2² = 1601731429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1601731396 and 1601731405.

It is not a weakly prime, because it can be changed into another prime (1601731403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800865716 + 800865717.

It is an arithmetic number, because the mean of its divisors is an integer number (800865717).

Almost surely, 2^1601731433 is an apocalyptic number.

It is an amenable number.

1601731433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601731433 is an equidigital number, since it uses as much as digits as its factorization.

1601731433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1601731433 is about 40021.6370604702. The cubic root of 1601731433 is about 1170.0288382596.

The spelling of 1601731433 in words is "one billion, six hundred one million, seven hundred thirty-one thousand, four hundred thirty-three".