2189627651 has 4 divisors (see below), whose sum is σ = 2192834232. Its totient is φ = 2186421072.

The previous prime is 2189627593. The next prime is 2189627677. The reversal of 2189627651 is 1567269812.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2189627651 - 2¹⁴ = 2189611267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189627596 and 2189627605.

It is not an unprimeable number, because it can be changed into a prime (2189627351) 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, 1602266 + ... + 1603631.

It is an arithmetic number, because the mean of its divisors is an integer number (548208558).

Almost surely, 2^2189627651 is an apocalyptic number.

2189627651 is a deficient number, since it is larger than the sum of its proper divisors (3206581).

2189627651 is an equidigital number, since it uses as much as digits as its factorization.

2189627651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206580.

The product of its digits is 362880, while the sum is 47.

The square root of 2189627651 is about 46793.4573524975. The cubic root of 2189627651 is about 1298.5442582381.

The spelling of 2189627651 in words is "two billion, one hundred eighty-nine million, six hundred twenty-seven thousand, six hundred fifty-one".