1601654513 has 2 divisors, whose sum is σ = 1601654514. Its totient is φ = 1601654512.

The previous prime is 1601654503. The next prime is 1601654563. The reversal of 1601654513 is 3154561061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1194946624 + 406707889 = 34568^2 + 20167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601654513 - 2⁶ = 1601654449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601654513.

It is not a weakly prime, because it can be changed into another prime (1601654503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800827256 + 800827257.

It is an arithmetic number, because the mean of its divisors is an integer number (800827257).

Almost surely, 2^1601654513 is an apocalyptic number.

It is an amenable number.

1601654513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601654513 is an equidigital number, since it uses as much as digits as its factorization.

1601654513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1601654513 is about 40020.6760687523. The cubic root of 1601654513 is about 1170.0101085157.

The spelling of 1601654513 in words is "one billion, six hundred one million, six hundred fifty-four thousand, five hundred thirteen".