2644233009 has 32 divisors (see below), whose sum is σ = 4077588480. Its totient is φ = 1508932800.

The previous prime is 2644232999. The next prime is 2644233029. The reversal of 2644233009 is 9003324462.

It is not a de Polignac number, because 2644233009 - 2¹² = 2644228913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2644233029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2922 + ... + 72780.

It is an arithmetic number, because the mean of its divisors is an integer number (127424640).

Almost surely, 2^2644233009 is an apocalyptic number.

It is an amenable number.

2644233009 is a deficient number, since it is larger than the sum of its proper divisors (1433355471).

2644233009 is a wasteful number, since it uses less digits than its factorization.

2644233009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69941.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 2644233009 is about 51422.1062287417. The cubic root of 2644233009 is about 1382.8229354810.

The spelling of 2644233009 in words is "two billion, six hundred forty-four million, two hundred thirty-three thousand, nine".