2144642633 has 12 divisors (see below), whose sum is σ = 2641541652. Its totient is φ = 1730131200.

The previous prime is 2144642611. The next prime is 2144642653. The reversal of 2144642633 is 3362464412.

It can be written as a sum of positive squares in 2 ways, for example, as 592046224 + 1552596409 = 24332^2 + 39403^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2144642633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144642593 and 2144642602.

It is not an unprimeable number, because it can be changed into a prime (2144642653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1286468 + ... + 1288133.

It is an arithmetic number, because the mean of its divisors is an integer number (220128471).

Almost surely, 2^2144642633 is an apocalyptic number.

It is an amenable number.

2144642633 is a deficient number, since it is larger than the sum of its proper divisors (496899019).

2144642633 is a wasteful number, since it uses less digits than its factorization.

2144642633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574632 (or 2574625 counting only the distinct ones).

The product of its digits is 82944, while the sum is 35.

The square root of 2144642633 is about 46310.2864707184. The cubic root of 2144642633 is about 1289.5899650283.

The spelling of 2144642633 in words is "two billion, one hundred forty-four million, six hundred forty-two thousand, six hundred thirty-three".