2297791997 has 2 divisors, whose sum is σ = 2297791998. Its totient is φ = 2297791996.

The previous prime is 2297791973. The next prime is 2297792009. The reversal of 2297791997 is 7991977922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1955319961 + 342472036 = 44219^2 + 18506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2297791997 - 2¹² = 2297787901 is a prime.

It is a super-2 number, since 2×2297791997² = 10559696122954496018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2297791967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1148895998 + 1148895999.

It is an arithmetic number, because the mean of its divisors is an integer number (1148895999).

Almost surely, 2^2297791997 is an apocalyptic number.

It is an amenable number.

2297791997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2297791997 is an equidigital number, since it uses as much as digits as its factorization.

2297791997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9001692, while the sum is 62.

The square root of 2297791997 is about 47935.2896830717. The cubic root of 2297791997 is about 1319.5835840219.

The spelling of 2297791997 in words is "two billion, two hundred ninety-seven million, seven hundred ninety-one thousand, nine hundred ninety-seven".