1021768107 has 16 divisors (see below), whose sum is σ = 1442115840. Its totient is φ = 642392352.

The previous prime is 1021768081. The next prime is 1021768151. The reversal of 1021768107 is 7018671201.

It is not a de Polignac number, because 1021768107 - 2¹⁰ = 1021767083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021768177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132823 + ... + 140304.

It is an arithmetic number, because the mean of its divisors is an integer number (90132240).

Almost surely, 2^1021768107 is an apocalyptic number.

1021768107 is a deficient number, since it is larger than the sum of its proper divisors (420347733).

1021768107 is a wasteful number, since it uses less digits than its factorization.

1021768107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273202.

The product of its (nonzero) digits is 4704, while the sum is 33.

The square root of 1021768107 is about 31965.1076488098. The cubic root of 1021768107 is about 1007.2040132358.

The spelling of 1021768107 in words is "one billion, twenty-one million, seven hundred sixty-eight thousand, one hundred seven".