1975218341 has 2 divisors, whose sum is σ = 1975218342. Its totient is φ = 1975218340.

The previous prime is 1975218319. The next prime is 1975218379. The reversal of 1975218341 is 1438125791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1561909441 + 413308900 = 39521^2 + 20330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1975218341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1975212341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987609170 + 987609171.

It is an arithmetic number, because the mean of its divisors is an integer number (987609171).

Almost surely, 2^1975218341 is an apocalyptic number.

It is an amenable number.

1975218341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1975218341 is an equidigital number, since it uses as much as digits as its factorization.

1975218341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 1975218341 is about 44443.4285468617. The cubic root of 1975218341 is about 1254.6955851773.

The spelling of 1975218341 in words is "one billion, nine hundred seventy-five million, two hundred eighteen thousand, three hundred forty-one".