756881849 has 2 divisors, whose sum is σ = 756881850. Its totient is φ = 756881848.

The previous prime is 756881831. The next prime is 756881887. The reversal of 756881849 is 948188657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753118249 + 3763600 = 27443^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 756881849 - 2²⁸ = 488446393 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 756881794 and 756881803.

It is not a weakly prime, because it can be changed into another prime (756881809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378440924 + 378440925.

It is an arithmetic number, because the mean of its divisors is an integer number (378440925).

Almost surely, 2^756881849 is an apocalyptic number.

It is an amenable number.

756881849 is a deficient number, since it is larger than the sum of its proper divisors (1).

756881849 is an equidigital number, since it uses as much as digits as its factorization.

756881849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 56.

The square root of 756881849 is about 27511.4857650400. The cubic root of 756881849 is about 911.3307619898.

The spelling of 756881849 in words is "seven hundred fifty-six million, eight hundred eighty-one thousand, eight hundred forty-nine".