2662651389 has 4 divisors (see below), whose sum is σ = 3550201856. Its totient is φ = 1775100924.

The previous prime is 2662651357. The next prime is 2662651429. The reversal of 2662651389 is 9831562662.

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 2662651389 - 2⁵ = 2662651357 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 (2662651339) 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, 443775229 + ... + 443775234.

It is an arithmetic number, because the mean of its divisors is an integer number (887550464).

Almost surely, 2^2662651389 is an apocalyptic number.

It is an amenable number.

2662651389 is a deficient number, since it is larger than the sum of its proper divisors (887550467).

2662651389 is an equidigital number, since it uses as much as digits as its factorization.

2662651389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887550466.

The product of its digits is 933120, while the sum is 48.

The square root of 2662651389 is about 51600.8855447268. The cubic root of 2662651389 is about 1386.0261895649.

The spelling of 2662651389 in words is "two billion, six hundred sixty-two million, six hundred fifty-one thousand, three hundred eighty-nine".