3690861529 has 4 divisors (see below), whose sum is σ = 3693551076. Its totient is φ = 3688171984.

The previous prime is 3690861479. The next prime is 3690861539. The reversal of 3690861529 is 9251680963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3012363225 + 678498304 = 54885^2 + 26048^2 .

It is a cyclic number.

It is not a de Polignac number, because 3690861529 - 2¹³ = 3690853337 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3690861539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342714 + ... + 1345459.

It is an arithmetic number, because the mean of its divisors is an integer number (923387769).

Almost surely, 2^3690861529 is an apocalyptic number.

It is an amenable number.

3690861529 is a deficient number, since it is larger than the sum of its proper divisors (2689547).

3690861529 is a wasteful number, since it uses less digits than its factorization.

3690861529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689546.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 3690861529 is about 60752.4610941812. The cubic root of 3690861529 is about 1545.4059641957.

The spelling of 3690861529 in words is "three billion, six hundred ninety million, eight hundred sixty-one thousand, five hundred twenty-nine".