2020371779 has 4 divisors (see below), whose sum is σ = 2020541376. Its totient is φ = 2020202184.

The previous prime is 2020371761. The next prime is 2020371827. The reversal of 2020371779 is 9771730202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020371779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020371709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65459 + ... + 91244.

It is an arithmetic number, because the mean of its divisors is an integer number (505135344).

Almost surely, 2^2020371779 is an apocalyptic number.

2020371779 is a deficient number, since it is larger than the sum of its proper divisors (169597).

2020371779 is a wasteful number, since it uses less digits than its factorization.

2020371779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169596.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 2020371779 is about 44948.5459052904. The cubic root of 2020371779 is about 1264.1844126449.

The spelling of 2020371779 in words is "two billion, twenty million, three hundred seventy-one thousand, seven hundred seventy-nine".