3689205557 has 2 divisors, whose sum is σ = 3689205558. Its totient is φ = 3689205556.

The previous prime is 3689205539. The next prime is 3689205563. The reversal of 3689205557 is 7555029863.

3689205557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3640191556 + 49014001 = 60334^2 + 7001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3689205557 is a prime.

It is a super-2 number, since 2×3689205557² = 27220475283599360498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3689205257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844602778 + 1844602779.

It is an arithmetic number, because the mean of its divisors is an integer number (1844602779).

Almost surely, 2^3689205557 is an apocalyptic number.

It is an amenable number.

3689205557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689205557 is an equidigital number, since it uses as much as digits as its factorization.

3689205557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The square root of 3689205557 is about 60738.8307180835. The cubic root of 3689205557 is about 1545.1748048113.

The spelling of 3689205557 in words is "three billion, six hundred eighty-nine million, two hundred five thousand, five hundred fifty-seven".