2071873491 has 4 divisors (see below), whose sum is σ = 2762497992. Its totient is φ = 1381248992.

The previous prime is 2071873483. The next prime is 2071873501. The reversal of 2071873491 is 1943781702.

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 2071873491 - 2³ = 2071873483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2071873591) 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, 345312246 + ... + 345312251.

It is an arithmetic number, because the mean of its divisors is an integer number (690624498).

Almost surely, 2^2071873491 is an apocalyptic number.

2071873491 is a deficient number, since it is larger than the sum of its proper divisors (690624501).

2071873491 is an equidigital number, since it uses as much as digits as its factorization.

2071873491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690624500.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 2071873491 is about 45517.8370641664. The cubic root of 2071873491 is about 1274.8362708634.

The spelling of 2071873491 in words is "two billion, seventy-one million, eight hundred seventy-three thousand, four hundred ninety-one".