2072842769 has 4 divisors (see below), whose sum is σ = 2106823860. Its totient is φ = 2038861680.

The previous prime is 2072842763. The next prime is 2072842771. The reversal of 2072842769 is 9672482702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9672482702 = 2 ⋅4836241351.

It can be written as a sum of positive squares in 2 ways, for example, as 88585744 + 1984257025 = 9412^2 + 44545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072842769 - 2¹² = 2072838673 is a prime.

It is a super-2 number, since 2×2072842769² = 8593354289991174722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2072842763) 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, 16990454 + ... + 16990575.

It is an arithmetic number, because the mean of its divisors is an integer number (526705965).

Almost surely, 2^2072842769 is an apocalyptic number.

It is an amenable number.

2072842769 is a deficient number, since it is larger than the sum of its proper divisors (33981091).

2072842769 is an equidigital number, since it uses as much as digits as its factorization.

2072842769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33981090.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 2072842769 is about 45528.4830518215. The cubic root of 2072842769 is about 1275.0350407389.

The spelling of 2072842769 in words is "two billion, seventy-two million, eight hundred forty-two thousand, seven hundred sixty-nine".