1649166216 has 16 divisors (see below), whose sum is σ = 4122915600. Its totient is φ = 549722064.

The previous prime is 1649166193. The next prime is 1649166223. The reversal of 1649166216 is 6126619461.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34357606 + ... + 34357653.

It is an arithmetic number, because the mean of its divisors is an integer number (257682225).

Almost surely, 2^1649166216 is an apocalyptic number.

It is an amenable number.

1649166216 is an abundant number, since it is smaller than the sum of its proper divisors (2473749384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649166216 is a wasteful number, since it uses less digits than its factorization.

1649166216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68715268 (or 68715264 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 1649166216 is about 40609.9275547248. The cubic root of 1649166216 is about 1181.4666757200.

The spelling of 1649166216 in words is "one billion, six hundred forty-nine million, one hundred sixty-six thousand, two hundred sixteen".