1601015873 has 2 divisors, whose sum is σ = 1601015874. Its totient is φ = 1601015872.

The previous prime is 1601015837. The next prime is 1601015881. The reversal of 1601015873 is 3785101061.

Together with previous prime (1601015837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1172857009 + 428158864 = 34247^2 + 20692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601015873 - 2²⁶ = 1533907009 is a prime.

1601015873 is a modest number, since divided by 15873 gives 1601 as remainder.

It is not a weakly prime, because it can be changed into another prime (1601035873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800507936 + 800507937.

It is an arithmetic number, because the mean of its divisors is an integer number (800507937).

Almost surely, 2^1601015873 is an apocalyptic number.

It is an amenable number.

1601015873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601015873 is an equidigital number, since it uses as much as digits as its factorization.

1601015873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1601015873 is about 40012.6963975186. The cubic root of 1601015873 is about 1169.8545788044.

The spelling of 1601015873 in words is "one billion, six hundred one million, fifteen thousand, eight hundred seventy-three".