1966519249 has 8 divisors (see below), whose sum is σ = 2008480320. Its totient is φ = 1924993296.

The previous prime is 1966519223. The next prime is 1966519259. The reversal of 1966519249 is 9429156691.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1966519249 - 2¹⁵ = 1966486481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1966519196 and 1966519205.

It is not an unprimeable number, because it can be changed into a prime (1966519259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99637 + ... + 117730.

It is an arithmetic number, because the mean of its divisors is an integer number (251060040).

Almost surely, 2^1966519249 is an apocalyptic number.

It is an amenable number.

1966519249 is a deficient number, since it is larger than the sum of its proper divisors (41961071).

1966519249 is a wasteful number, since it uses less digits than its factorization.

1966519249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217559.

The product of its digits is 1049760, while the sum is 52.

The square root of 1966519249 is about 44345.4535324649. The cubic root of 1966519249 is about 1252.8509325900.

The spelling of 1966519249 in words is "one billion, nine hundred sixty-six million, five hundred nineteen thousand, two hundred forty-nine".