2780852537 has 4 divisors (see below), whose sum is σ = 2944432116. Its totient is φ = 2617272960.

The previous prime is 2780852533. The next prime is 2780852539. The reversal of 2780852537 is 7352580872.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2262334096 + 518518441 = 47564^2 + 22771^2 .

It is a cyclic number.

It is not a de Polignac number, because 2780852537 - 2² = 2780852533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2780852491 and 2780852500.

It is not an unprimeable number, because it can be changed into a prime (2780852533) 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, 81789764 + ... + 81789797.

It is an arithmetic number, because the mean of its divisors is an integer number (736108029).

Almost surely, 2^2780852537 is an apocalyptic number.

It is an amenable number.

2780852537 is a deficient number, since it is larger than the sum of its proper divisors (163579579).

2780852537 is a wasteful number, since it uses less digits than its factorization.

2780852537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163579578.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 2780852537 is about 52733.7893290440. The cubic root of 2780852537 is about 1406.2395880526.

The spelling of 2780852537 in words is "two billion, seven hundred eighty million, eight hundred fifty-two thousand, five hundred thirty-seven".