3628188989 has 4 divisors (see below), whose sum is σ = 3630697824. Its totient is φ = 3625680156.

The previous prime is 3628188979. The next prime is 3628189001. The reversal of 3628188989 is 9898818263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3628188989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628188979) 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, 1252247 + ... + 1255140.

It is an arithmetic number, because the mean of its divisors is an integer number (907674456).

Almost surely, 2^3628188989 is an apocalyptic number.

It is an amenable number.

3628188989 is a deficient number, since it is larger than the sum of its proper divisors (2508835).

3628188989 is a wasteful number, since it uses less digits than its factorization.

3628188989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508834.

The product of its digits is 11943936, while the sum is 62.

The square root of 3628188989 is about 60234.4501842592. The cubic root of 3628188989 is about 1536.6087444713.

The spelling of 3628188989 in words is "three billion, six hundred twenty-eight million, one hundred eighty-eight thousand, nine hundred eighty-nine".