1010645643 has 16 divisors (see below), whose sum is σ = 1545765120. Its totient is φ = 575361696.

The previous prime is 1010645627. The next prime is 1010645651. The reversal of 1010645643 is 3465460101.

It is not a de Polignac number, because 1010645643 - 2⁴ = 1010645627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1010645643.

It is not an unprimeable number, because it can be changed into a prime (1010645243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83805 + ... + 95102.

It is an arithmetic number, because the mean of its divisors is an integer number (96610320).

Almost surely, 2^1010645643 is an apocalyptic number.

1010645643 is a deficient number, since it is larger than the sum of its proper divisors (535119477).

1010645643 is a wasteful number, since it uses less digits than its factorization.

1010645643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179186.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1010645643 is about 31790.6533905801. The cubic root of 1010645643 is about 1003.5360294250.

The spelling of 1010645643 in words is "one billion, ten million, six hundred forty-five thousand, six hundred forty-three".