361219997 has 2 divisors, whose sum is σ = 361219998. Its totient is φ = 361219996.

The previous prime is 361219993. The next prime is 361220017. The reversal of 361219997 is 799912163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286760356 + 74459641 = 16934^2 + 8629^2 .

It is a cyclic number.

It is not a de Polignac number, because 361219997 - 2² = 361219993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361219993) 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, 180609998 + 180609999.

It is an arithmetic number, because the mean of its divisors is an integer number (180609999).

Almost surely, 2^361219997 is an apocalyptic number.

It is an amenable number.

361219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

361219997 is an equidigital number, since it uses as much as digits as its factorization.

361219997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The square root of 361219997 is about 19005.7885129768. The cubic root of 361219997 is about 712.1813472808.

The spelling of 361219997 in words is "three hundred sixty-one million, two hundred nineteen thousand, nine hundred ninety-seven".