2189093551 has 4 divisors (see below), whose sum is σ = 2259709504. Its totient is φ = 2118477600.

The previous prime is 2189093521. The next prime is 2189093581. The reversal of 2189093551 is 1553909812.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2189093521) and next prime (2189093581).

It is a cyclic number.

It is not a de Polignac number, because 2189093551 - 2¹⁹ = 2188569263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189093498 and 2189093507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189093521) 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, 35307930 + ... + 35307991.

It is an arithmetic number, because the mean of its divisors is an integer number (564927376).

Almost surely, 2^2189093551 is an apocalyptic number.

2189093551 is a deficient number, since it is larger than the sum of its proper divisors (70615953).

2189093551 is an equidigital number, since it uses as much as digits as its factorization.

2189093551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70615952.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 2189093551 is about 46787.7500100186. The cubic root of 2189093551 is about 1298.4386681565.

The spelling of 2189093551 in words is "two billion, one hundred eighty-nine million, ninety-three thousand, five hundred fifty-one".