1073166643 has 4 divisors (see below), whose sum is σ = 1077657120. Its totient is φ = 1068676168.

The previous prime is 1073166551. The next prime is 1073166659. The reversal of 1073166643 is 3466613701.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1073166643 - 2¹³ = 1073158451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073166673) 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, 2244880 + ... + 2245357.

It is an arithmetic number, because the mean of its divisors is an integer number (269414280).

Almost surely, 2^1073166643 is an apocalyptic number.

1073166643 is a deficient number, since it is larger than the sum of its proper divisors (4490477).

1073166643 is an equidigital number, since it uses as much as digits as its factorization.

1073166643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490476.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1073166643 is about 32759.2222587778. Note that the first 4 decimals coincide. The cubic root of 1073166643 is about 1023.8171222259.

The spelling of 1073166643 in words is "one billion, seventy-three million, one hundred sixty-six thousand, six hundred forty-three".