1645116206 has 8 divisors (see below), whose sum is σ = 2491632624. Its totient is φ = 814572000.

The previous prime is 1645116203. The next prime is 1645116211. The reversal of 1645116206 is 6026115461.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645116203) 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, 3992795 + ... + 3993206.

It is an arithmetic number, because the mean of its divisors is an integer number (311454078).

Almost surely, 2^1645116206 is an apocalyptic number.

1645116206 is a deficient number, since it is larger than the sum of its proper divisors (846516418).

1645116206 is a wasteful number, since it uses less digits than its factorization.

1645116206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986106.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1645116206 is about 40560.0321252338. The cubic root of 1645116206 is about 1180.4987372739.

The spelling of 1645116206 in words is "one billion, six hundred forty-five million, one hundred sixteen thousand, two hundred six".