214919813 has 4 divisors (see below), whose sum is σ = 215252640. Its totient is φ = 214586988.

The previous prime is 214919753. The next prime is 214919833. The reversal of 214919813 is 318919412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214919813 - 2⁸ = 214919557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214919833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165443 + ... + 166736.

It is an arithmetic number, because the mean of its divisors is an integer number (53813160).

Almost surely, 2^214919813 is an apocalyptic number.

It is an amenable number.

214919813 is a deficient number, since it is larger than the sum of its proper divisors (332827).

214919813 is an equidigital number, since it uses as much as digits as its factorization.

214919813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332826.

The product of its digits is 15552, while the sum is 38.

The square root of 214919813 is about 14660.1436896096. The cubic root of 214919813 is about 598.9981549604.

The spelling of 214919813 in words is "two hundred fourteen million, nine hundred nineteen thousand, eight hundred thirteen".