219207494416 has 45 divisors (see below), whose sum is σ = 431395090119. Its totient is φ = 107906068512.

The previous prime is 219207494383. The next prime is 219207494417. The reversal of 219207494416 is 614494702912.

The square root of 219207494416 is 468196.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219207494416.

It is not an unprimeable number, because it can be changed into a prime (219207494417) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125475655 + ... + 125477401.

Almost surely, 2^219207494416 is an apocalyptic number.

219207494416 is the 468196-th square number.

It is an amenable number.

219207494416 is a deficient number, since it is larger than the sum of its proper divisors (212187595703).

219207494416 is an frugal number, since it uses more digits than its factorization.

219207494416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

Multiplying 219207494416 by its sum of digits (49), we get a square (10741167226384 = 3277372²).

The spelling of 219207494416 in words is "two hundred nineteen billion, two hundred seven million, four hundred ninety-four thousand, four hundred sixteen".