1022020379 has 2 divisors, whose sum is σ = 1022020380. Its totient is φ = 1022020378.

The previous prime is 1022020357. The next prime is 1022020429. The reversal of 1022020379 is 9730202201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9730202201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022020379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1022020319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010189 + 511010190.

It is an arithmetic number, because the mean of its divisors is an integer number (511010190).

Almost surely, 2^1022020379 is an apocalyptic number.

1022020379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022020379 is an equidigital number, since it uses as much as digits as its factorization.

1022020379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1022020379 is about 31969.0534579928. The cubic root of 1022020379 is about 1007.2868984686.

The spelling of 1022020379 in words is "one billion, twenty-two million, twenty thousand, three hundred seventy-nine".