368883721 has 2 divisors, whose sum is σ = 368883722. Its totient is φ = 368883720.

The previous prime is 368883719. The next prime is 368883743. The reversal of 368883721 is 127388863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326308096 + 42575625 = 18064^2 + 6525^2 .

It is a cyclic number.

It is not a de Polignac number, because 368883721 - 2¹ = 368883719 is a prime.

Together with 368883719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (368883751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184441860 + 184441861.

It is an arithmetic number, because the mean of its divisors is an integer number (184441861).

Almost surely, 2^368883721 is an apocalyptic number.

It is an amenable number.

368883721 is a deficient number, since it is larger than the sum of its proper divisors (1).

368883721 is an equidigital number, since it uses as much as digits as its factorization.

368883721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 368883721 is about 19206.3458523479. The cubic root of 368883721 is about 717.1827414854.

The spelling of 368883721 in words is "three hundred sixty-eight million, eight hundred eighty-three thousand, seven hundred twenty-one".