1002111973 has 2 divisors, whose sum is σ = 1002111974. Its totient is φ = 1002111972.

The previous prime is 1002111967. The next prime is 1002112019. The reversal of 1002111973 is 3791112001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742998564 + 259113409 = 27258^2 + 16097^2 .

It is an emirp because it is prime and its reverse (3791112001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002111973 - 2⁵ = 1002111941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002111073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501055986 + 501055987.

It is an arithmetic number, because the mean of its divisors is an integer number (501055987).

Almost surely, 2^1002111973 is an apocalyptic number.

It is an amenable number.

1002111973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002111973 is an equidigital number, since it uses as much as digits as its factorization.

1002111973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 1002111973 is about 31656.1522140642. The cubic root of 1002111973 is about 1000.7034959774.

Adding to 1002111973 its reverse (3791112001), we get a palindrome (4793223974).

The spelling of 1002111973 in words is "one billion, two million, one hundred eleven thousand, nine hundred seventy-three".