1996809277 has 2 divisors, whose sum is σ = 1996809278. Its totient is φ = 1996809276.

The previous prime is 1996809271. The next prime is 1996809281. The reversal of 1996809277 is 7729086991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1534602276 + 462207001 = 39174^2 + 21499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996809277 - 2⁷ = 1996809149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996809271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998404638 + 998404639.

It is an arithmetic number, because the mean of its divisors is an integer number (998404639).

Almost surely, 2^1996809277 is an apocalyptic number.

It is an amenable number.

1996809277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996809277 is an equidigital number, since it uses as much as digits as its factorization.

1996809277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The square root of 1996809277 is about 44685.6719430289. The cubic root of 1996809277 is about 1259.2506834308.

The spelling of 1996809277 in words is "one billion, nine hundred ninety-six million, eight hundred nine thousand, two hundred seventy-seven".