2071863879 has 4 divisors (see below), whose sum is σ = 2762485176. Its totient is φ = 1381242584.

The previous prime is 2071863869. The next prime is 2071863901. The reversal of 2071863879 is 9783681702.

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

It is a cyclic number.

It is not a de Polignac number, because 2071863879 - 2⁷ = 2071863751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071863869) 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, 345310644 + ... + 345310649.

It is an arithmetic number, because the mean of its divisors is an integer number (690621294).

Almost surely, 2^2071863879 is an apocalyptic number.

2071863879 is a deficient number, since it is larger than the sum of its proper divisors (690621297).

2071863879 is an equidigital number, since it uses as much as digits as its factorization.

2071863879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690621296.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 2071863879 is about 45517.7314790621. The cubic root of 2071863879 is about 1274.8342994198.

The spelling of 2071863879 in words is "two billion, seventy-one million, eight hundred sixty-three thousand, eight hundred seventy-nine".