2020131979 has 2 divisors, whose sum is σ = 2020131980. Its totient is φ = 2020131978.

The previous prime is 2020131961. The next prime is 2020132027. The reversal of 2020131979 is 9791310202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020131979 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020131479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010065989 + 1010065990.

It is an arithmetic number, because the mean of its divisors is an integer number (1010065990).

Almost surely, 2^2020131979 is an apocalyptic number.

2020131979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020131979 is an equidigital number, since it uses as much as digits as its factorization.

2020131979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2020131979 is about 44945.8783316112. The cubic root of 2020131979 is about 1264.1343948842.

The spelling of 2020131979 in words is "two billion, twenty million, one hundred thirty-one thousand, nine hundred seventy-nine".