368209489 has 2 divisors, whose sum is σ = 368209490. Its totient is φ = 368209488.

The previous prime is 368209451. The next prime is 368209519. The reversal of 368209489 is 984902863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184742464 + 183467025 = 13592^2 + 13545^2 .

It is a cyclic number.

It is not a de Polignac number, because 368209489 - 2⁹ = 368208977 is a prime.

It is a super-2 number, since 2×368209489² = 271156455579282242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (368809489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184104744 + 184104745.

It is an arithmetic number, because the mean of its divisors is an integer number (184104745).

Almost surely, 2^368209489 is an apocalyptic number.

It is an amenable number.

368209489 is a deficient number, since it is larger than the sum of its proper divisors (1).

368209489 is an equidigital number, since it uses as much as digits as its factorization.

368209489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 368209489 is about 19188.7855009117. The cubic root of 368209489 is about 716.7455283208.

The spelling of 368209489 in words is "three hundred sixty-eight million, two hundred nine thousand, four hundred eighty-nine".