216450413 has 4 divisors (see below), whose sum is σ = 227842560. Its totient is φ = 205058268.

The previous prime is 216450391. The next prime is 216450419. The reversal of 216450413 is 314054612.

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 216450413 - 2¹² = 216446317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216450419) 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, 5696045 + ... + 5696082.

It is an arithmetic number, because the mean of its divisors is an integer number (56960640).

Almost surely, 2^216450413 is an apocalyptic number.

It is an amenable number.

216450413 is a deficient number, since it is larger than the sum of its proper divisors (11392147).

216450413 is a wasteful number, since it uses less digits than its factorization.

216450413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11392146.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 216450413 is about 14712.2538382126. The cubic root of 216450413 is about 600.4167595262.

The spelling of 216450413 in words is "two hundred sixteen million, four hundred fifty thousand, four hundred thirteen".