2144732644 has 12 divisors (see below), whose sum is σ = 3874355968. Its totient is φ = 1037773800.

The previous prime is 2144732621. The next prime is 2144732683. The reversal of 2144732644 is 4462374412.

It is a happy number.

It is a super-2 number, since 2×2144732644² = 9199756228478461472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8647992 + ... + 8648239.

Almost surely, 2^2144732644 is an apocalyptic number.

It is an amenable number.

2144732644 is a deficient number, since it is larger than the sum of its proper divisors (1729623324).

2144732644 is a wasteful number, since it uses less digits than its factorization.

2144732644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17296266 (or 17296264 counting only the distinct ones).

The product of its digits is 129024, while the sum is 37.

The square root of 2144732644 is about 46311.2582856480. The cubic root of 2144732644 is about 1289.6080062094.

The spelling of 2144732644 in words is "two billion, one hundred forty-four million, seven hundred thirty-two thousand, six hundred forty-four".