2779125893 has 2 divisors, whose sum is σ = 2779125894. Its totient is φ = 2779125892.

The previous prime is 2779125889. The next prime is 2779125971. The reversal of 2779125893 is 3985219772.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1451762404 + 1327363489 = 38102^2 + 36433^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779125893 - 2² = 2779125889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2779124893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389562946 + 1389562947.

It is an arithmetic number, because the mean of its divisors is an integer number (1389562947).

Almost surely, 2^2779125893 is an apocalyptic number.

It is an amenable number.

2779125893 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779125893 is an equidigital number, since it uses as much as digits as its factorization.

2779125893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 2779125893 is about 52717.4154620653. The cubic root of 2779125893 is about 1405.9484809404.

The spelling of 2779125893 in words is "two billion, seven hundred seventy-nine million, one hundred twenty-five thousand, eight hundred ninety-three".