2160297481 has 2 divisors, whose sum is σ = 2160297482. Its totient is φ = 2160297480.

The previous prime is 2160297439. The next prime is 2160297499. The reversal of 2160297481 is 1847920612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1981674256 + 178623225 = 44516^2 + 13365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2160297481 - 2¹¹ = 2160295433 is a prime.

It is a super-2 number, since 2×2160297481² = 9333770412829890722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2160297401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080148740 + 1080148741.

It is an arithmetic number, because the mean of its divisors is an integer number (1080148741).

Almost surely, 2^2160297481 is an apocalyptic number.

It is an amenable number.

2160297481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160297481 is an equidigital number, since it uses as much as digits as its factorization.

2160297481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2160297481 is about 46479.0004303019. Note that the first 3 decimals coincide. The cubic root of 2160297481 is about 1292.7201542012.

Subtracting from 2160297481 its sum of digits (40), we obtain a square (2160297441 = 46479²).

The spelling of 2160297481 in words is "two billion, one hundred sixty million, two hundred ninety-seven thousand, four hundred eighty-one".