213738089 has 2 divisors, whose sum is σ = 213738090. Its totient is φ = 213738088.

The previous prime is 213738037. The next prime is 213738101. The reversal of 213738089 is 980837312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204976489 + 8761600 = 14317^2 + 2960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213738089 is a prime.

It is not a weakly prime, because it can be changed into another prime (213738389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106869044 + 106869045.

It is an arithmetic number, because the mean of its divisors is an integer number (106869045).

Almost surely, 2^213738089 is an apocalyptic number.

It is an amenable number.

213738089 is a deficient number, since it is larger than the sum of its proper divisors (1).

213738089 is an equidigital number, since it uses as much as digits as its factorization.

213738089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 213738089 is about 14619.7841639335. The cubic root of 213738089 is about 597.8982845459.

The spelling of 213738089 in words is "two hundred thirteen million, seven hundred thirty-eight thousand, eighty-nine".