2197830457 has 2 divisors, whose sum is σ = 2197830458. Its totient is φ = 2197830456.

The previous prime is 2197830419. The next prime is 2197830463. The reversal of 2197830457 is 7540387912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197436816 + 1000393641 = 34604^2 + 31629^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197830457 - 2¹⁹ = 2197306169 is a prime.

It is not a weakly prime, because it can be changed into another prime (2197830487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098915228 + 1098915229.

It is an arithmetic number, because the mean of its divisors is an integer number (1098915229).

Almost surely, 2^2197830457 is an apocalyptic number.

It is an amenable number.

2197830457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197830457 is an equidigital number, since it uses as much as digits as its factorization.

2197830457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 2197830457 is about 46881.0244875259. The cubic root of 2197830457 is about 1300.1637775908.

The spelling of 2197830457 in words is "two billion, one hundred ninety-seven million, eight hundred thirty thousand, four hundred fifty-seven".