216150709 has 2 divisors, whose sum is σ = 216150710. Its totient is φ = 216150708.

The previous prime is 216150677. The next prime is 216150713. The reversal of 216150709 is 907051612.

216150709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187827025 + 28323684 = 13705^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 216150709 - 2⁵ = 216150677 is a prime.

It is a super-2 number, since 2×216150709² = 93442258002405362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216150799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108075354 + 108075355.

It is an arithmetic number, because the mean of its divisors is an integer number (108075355).

Almost surely, 2^216150709 is an apocalyptic number.

It is an amenable number.

216150709 is a deficient number, since it is larger than the sum of its proper divisors (1).

216150709 is an equidigital number, since it uses as much as digits as its factorization.

216150709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 216150709 is about 14702.0647869610. The cubic root of 216150709 is about 600.1395129281.

The spelling of 216150709 in words is "two hundred sixteen million, one hundred fifty thousand, seven hundred nine".