1144664632 has 8 divisors (see below), whose sum is σ = 2146246200. Its totient is φ = 572332312.

The previous prime is 1144664623. The next prime is 1144664639. The reversal of 1144664632 is 2364664411.

It is a tau number, because it is divible by the number of its divisors (8).

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 a junction number, because it is equal to n+sod(n) for n = 1144664591 and 1144664600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144664639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71541532 + ... + 71541547.

It is an arithmetic number, because the mean of its divisors is an integer number (268280775).

Almost surely, 2^1144664632 is an apocalyptic number.

It is an amenable number.

1144664632 is a deficient number, since it is larger than the sum of its proper divisors (1001581568).

1144664632 is a wasteful number, since it uses less digits than its factorization.

1144664632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143083085 (or 143083081 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 1144664632 is about 33832.8927524680. The cubic root of 1144664632 is about 1046.0668064430.

The spelling of 1144664632 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, six hundred thirty-two".