2197953077 has 2 divisors, whose sum is σ = 2197953078. Its totient is φ = 2197953076.

The previous prime is 2197953067. The next prime is 2197953083. The reversal of 2197953077 is 7703597912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1760557681 + 437395396 = 41959^2 + 20914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197953077 - 2⁶ = 2197953013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197953067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098976538 + 1098976539.

It is an arithmetic number, because the mean of its divisors is an integer number (1098976539).

Almost surely, 2^2197953077 is an apocalyptic number.

It is an amenable number.

2197953077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197953077 is an equidigital number, since it uses as much as digits as its factorization.

2197953077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 2197953077 is about 46882.3322478735. The cubic root of 2197953077 is about 1300.1879564528.

The spelling of 2197953077 in words is "two billion, one hundred ninety-seven million, nine hundred fifty-three thousand, seventy-seven".