1022011973 has 2 divisors, whose sum is σ = 1022011974. Its totient is φ = 1022011972.

The previous prime is 1022011943. The next prime is 1022012021. The reversal of 1022011973 is 3791102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704530849 + 317481124 = 26543^2 + 17818^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022011973 - 2⁸ = 1022011717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022011943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511005986 + 511005987.

It is an arithmetic number, because the mean of its divisors is an integer number (511005987).

Almost surely, 2^1022011973 is an apocalyptic number.

It is an amenable number.

1022011973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022011973 is an equidigital number, since it uses as much as digits as its factorization.

1022011973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1022011973 is about 31968.9219868296. The cubic root of 1022011973 is about 1007.2841368548.

The spelling of 1022011973 in words is "one billion, twenty-two million, eleven thousand, nine hundred seventy-three".