1001109973 has 2 divisors, whose sum is σ = 1001109974. Its totient is φ = 1001109972.

The previous prime is 1001109919. The next prime is 1001110007. The reversal of 1001109973 is 3799011001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913369284 + 87740689 = 30222^2 + 9367^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001109973 - 2¹³ = 1001101781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001106973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500554986 + 500554987.

It is an arithmetic number, because the mean of its divisors is an integer number (500554987).

Almost surely, 2^1001109973 is an apocalyptic number.

It is an amenable number.

1001109973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001109973 is an equidigital number, since it uses as much as digits as its factorization.

1001109973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 1001109973 is about 31640.3219484252. The cubic root of 1001109973 is about 1000.3698541910.

The spelling of 1001109973 in words is "one billion, one million, one hundred nine thousand, nine hundred seventy-three".