2197480381 has 2 divisors, whose sum is σ = 2197480382. Its totient is φ = 2197480380.

The previous prime is 2197480343. The next prime is 2197480447. The reversal of 2197480381 is 1830847912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1930811481 + 266668900 = 43941^2 + 16330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197480381 - 2¹⁹ = 2196956093 is a prime.

It is a super-2 number, since 2×2197480381² = 9657840049759810322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197480301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098740190 + 1098740191.

It is an arithmetic number, because the mean of its divisors is an integer number (1098740191).

Almost surely, 2^2197480381 is an apocalyptic number.

It is an amenable number.

2197480381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197480381 is an equidigital number, since it uses as much as digits as its factorization.

2197480381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 2197480381 is about 46877.2906746966. The cubic root of 2197480381 is about 1300.0947427992.

The spelling of 2197480381 in words is "two billion, one hundred ninety-seven million, four hundred eighty thousand, three hundred eighty-one".