2071381979 has 8 divisors (see below), whose sum is σ = 2116458048. Its totient is φ = 2026347840.

The previous prime is 2071381973. The next prime is 2071381981. The reversal of 2071381979 is 9791831702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2071381979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2071381973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102449 + ... + 120989.

It is an arithmetic number, because the mean of its divisors is an integer number (264557256).

Almost surely, 2^2071381979 is an apocalyptic number.

2071381979 is a deficient number, since it is larger than the sum of its proper divisors (45076069).

2071381979 is a wasteful number, since it uses less digits than its factorization.

2071381979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20965.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 2071381979 is about 45512.4376297293. The cubic root of 2071381979 is about 1274.7354527900.

The spelling of 2071381979 in words is "two billion, seventy-one million, three hundred eighty-one thousand, nine hundred seventy-nine".