213919465 has 8 divisors (see below), whose sum is σ = 257345928. Its totient is φ = 170707200.

The previous prime is 213919441. The next prime is 213919571. The reversal of 213919465 is 564919312.

It can be written as a sum of positive squares in 4 ways, for example, as 83411689 + 130507776 = 9133^2 + 11424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213919465 - 2⁷ = 213919337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51342 + ... + 55351.

It is an arithmetic number, because the mean of its divisors is an integer number (32168241).

Almost surely, 2^213919465 is an apocalyptic number.

It is an amenable number.

213919465 is a deficient number, since it is larger than the sum of its proper divisors (43426463).

213919465 is a wasteful number, since it uses less digits than its factorization.

213919465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107099.

The product of its digits is 58320, while the sum is 40.

The square root of 213919465 is about 14625.9859496719. The cubic root of 213919465 is about 598.0673602268.

The spelling of 213919465 in words is "two hundred thirteen million, nine hundred nineteen thousand, four hundred sixty-five".