3581225779 has 4 divisors (see below), whose sum is σ = 3587498200. Its totient is φ = 3574953360.

The previous prime is 3581225761. The next prime is 3581225821. The reversal of 3581225779 is 9775221853.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9775221853 = 5237 ⋅1866569.

It is a cyclic number.

It is not a de Polignac number, because 3581225779 - 2¹¹ = 3581223731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3581222779) 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, 3135354 + ... + 3136495.

It is an arithmetic number, because the mean of its divisors is an integer number (896874550).

Almost surely, 2^3581225779 is an apocalyptic number.

3581225779 is a deficient number, since it is larger than the sum of its proper divisors (6272421).

3581225779 is an equidigital number, since it uses as much as digits as its factorization.

3581225779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272420.

The product of its digits is 1058400, while the sum is 49.

The square root of 3581225779 is about 59843.3436482287. The cubic root of 3581225779 is about 1529.9499861191.

The spelling of 3581225779 in words is "three billion, five hundred eighty-one million, two hundred twenty-five thousand, seven hundred seventy-nine".