3680891573 has 2 divisors, whose sum is σ = 3680891574. Its totient is φ = 3680891572.

The previous prime is 3680891567. The next prime is 3680891593. The reversal of 3680891573 is 3751980863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1901570449 + 1779321124 = 43607^2 + 42182^2 .

It is a cyclic number.

It is not a de Polignac number, because 3680891573 - 2¹² = 3680887477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3680891593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840445786 + 1840445787.

It is an arithmetic number, because the mean of its divisors is an integer number (1840445787).

Almost surely, 2^3680891573 is an apocalyptic number.

It is an amenable number.

3680891573 is a deficient number, since it is larger than the sum of its proper divisors (1).

3680891573 is an equidigital number, since it uses as much as digits as its factorization.

3680891573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 3680891573 is about 60670.3516802070. The cubic root of 3680891573 is about 1544.0131978086.

The spelling of 3680891573 in words is "three billion, six hundred eighty million, eight hundred ninety-one thousand, five hundred seventy-three".