213746893 has 2 divisors, whose sum is σ = 213746894. Its totient is φ = 213746892.

The previous prime is 213746887. The next prime is 213746917. The reversal of 213746893 is 398647312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 101344489 = 10602^2 + 10067^2 .

It is a cyclic number.

It is not a de Polignac number, because 213746893 - 2⁵ = 213746861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213746803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106873446 + 106873447.

It is an arithmetic number, because the mean of its divisors is an integer number (106873447).

Almost surely, 2^213746893 is an apocalyptic number.

It is an amenable number.

213746893 is a deficient number, since it is larger than the sum of its proper divisors (1).

213746893 is an equidigital number, since it uses as much as digits as its factorization.

213746893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 213746893 is about 14620.0852596693. The cubic root of 213746893 is about 597.9064936961.

The spelling of 213746893 in words is "two hundred thirteen million, seven hundred forty-six thousand, eight hundred ninety-three".