2189026362657 has 4 divisors (see below), whose sum is σ = 2918701816880. Its totient is φ = 1459350908436.

The previous prime is 2189026362629. The next prime is 2189026362661. The reversal of 2189026362657 is 7562636209812.

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 not a de Polignac number, because 2189026362657 - 2²⁰ = 2189025314081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2189026362597 and 2189026362606.

It is not an unprimeable number, because it can be changed into a prime (2189026362157) 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, 364837727107 + ... + 364837727112.

It is an arithmetic number, because the mean of its divisors is an integer number (729675454220).

Almost surely, 2^{2189026362657} is an apocalyptic number.

It is an amenable number.

2189026362657 is a deficient number, since it is larger than the sum of its proper divisors (729675454223).

2189026362657 is an equidigital number, since it uses as much as digits as its factorization.

2189026362657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729675454222.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 2189026362657 in words is "two trillion, one hundred eighty-nine billion, twenty-six million, three hundred sixty-two thousand, six hundred fifty-seven".