2074251691 has 4 divisors (see below), whose sum is σ = 2076485400. Its totient is φ = 2072017984.

The previous prime is 2074251643. The next prime is 2074251703. The reversal of 2074251691 is 1961524702.

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 2074251691 - 2¹⁷ = 2074120619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2074251691.

It is not an unprimeable number, because it can be changed into a prime (2074251631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115461 + ... + 1117318.

It is an arithmetic number, because the mean of its divisors is an integer number (519121350).

Almost surely, 2^2074251691 is an apocalyptic number.

2074251691 is a deficient number, since it is larger than the sum of its proper divisors (2233709).

2074251691 is an equidigital number, since it uses as much as digits as its factorization.

2074251691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233708.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2074251691 is about 45543.9533966914. The cubic root of 2074251691 is about 1275.3238579592.

The spelling of 2074251691 in words is "two billion, seventy-four million, two hundred fifty-one thousand, six hundred ninety-one".