2974805851789 has 8 divisors (see below), whose sum is σ = 3192942301560. Its totient is φ = 2761463609856.

The previous prime is 2974805851783. The next prime is 2974805851793. The reversal of 2974805851789 is 9871585084792.

It can be written as a sum of positive squares in 4 ways, for example, as 1607613518889 + 1367192332900 = 1267917^2 + 1169270^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2974805851789 - 2³ = 2974805851781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2974805851781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198550674 + ... + 1198553155.

It is an arithmetic number, because the mean of its divisors is an integer number (399117787695).

Almost surely, 2^{2974805851789} is an apocalyptic number.

It is an amenable number.

2974805851789 is a deficient number, since it is larger than the sum of its proper divisors (218136449771).

2974805851789 is a wasteful number, since it uses less digits than its factorization.

2974805851789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397103919.

The product of its (nonzero) digits is 406425600, while the sum is 73.

The spelling of 2974805851789 in words is "two trillion, nine hundred seventy-four billion, eight hundred five million, eight hundred fifty-one thousand, seven hundred eighty-nine".