7198202381 has 2 divisors, whose sum is σ = 7198202382. Its totient is φ = 7198202380.

The previous prime is 7198202309. The next prime is 7198202423. The reversal of 7198202381 is 1832028917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6422579881 + 775622500 = 80141^2 + 27850^2 .

It is a cyclic number.

It is not a de Polignac number, because 7198202381 - 2²² = 7194008077 is a prime.

It is a super-2 number, since 2×7198202381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7198202681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3599101190 + 3599101191.

It is an arithmetic number, because the mean of its divisors is an integer number (3599101191).

Almost surely, 2^7198202381 is an apocalyptic number.

It is an amenable number.

7198202381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7198202381 is an equidigital number, since it uses as much as digits as its factorization.

7198202381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 7198202381 is about 84842.2205096024. The cubic root of 7198202381 is about 1930.8180537925.

The spelling of 7198202381 in words is "seven billion, one hundred ninety-eight million, two hundred two thousand, three hundred eighty-one".