3639010249161 has 135 divisors (see below), whose sum is σ = 6481255941069. Its totient is φ = 1967106190896.

The previous prime is 3639010249087. The next prime is 3639010249169. The reversal of 3639010249161 is 1619420109363.

The square root of 3639010249161 is 1907619.

It is a perfect power (a square), and thus also a powerful number.

3639010249161 is a `hidden beast` number, since 3 + 6 + 3 + 90 + 10 + 2 + 491 + 61 = 666.

It is not a de Polignac number, because 3639010249161 - 2⁷ = 3639010249033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3639010249169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 5327979526 + ... + 5327980208.

Almost surely, 2^{3639010249161} is an apocalyptic number.

3639010249161 is the 1907619-th square number.

3639010249161 is the 953810-th centered octagonal number.

It is an amenable number.

3639010249161 is a deficient number, since it is larger than the sum of its proper divisors (2842245691908).

3639010249161 is an frugal number, since it uses more digits than its factorization.

3639010249161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 3639010249161 in words is "three trillion, six hundred thirty-nine billion, ten million, two hundred forty-nine thousand, one hundred sixty-one".