216954043 has 2 divisors, whose sum is σ = 216954044. Its totient is φ = 216954042.

The previous prime is 216954037. The next prime is 216954053. The reversal of 216954043 is 340459612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216954043 - 2¹³ = 216945851 is a prime.

It is not a weakly prime, because it can be changed into another prime (216954013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108477021 + 108477022.

It is an arithmetic number, because the mean of its divisors is an integer number (108477022).

Almost surely, 2^216954043 is an apocalyptic number.

216954043 is a deficient number, since it is larger than the sum of its proper divisors (1).

216954043 is an equidigital number, since it uses as much as digits as its factorization.

216954043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 216954043 is about 14729.3598978367. The cubic root of 216954043 is about 600.8820757500.

The spelling of 216954043 in words is "two hundred sixteen million, nine hundred fifty-four thousand, forty-three".