1646201416 has 16 divisors (see below), whose sum is σ = 3123817200. Its totient is φ = 813183504.

The previous prime is 1646201399. The next prime is 1646201419. The reversal of 1646201416 is 6141026461.

It is not an unprimeable number, because it can be changed into a prime (1646201419) 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, 1238946 + ... + 1240273.

It is an arithmetic number, because the mean of its divisors is an integer number (195238575).

Almost surely, 2^1646201416 is an apocalyptic number.

It is an amenable number.

1646201416 is a deficient number, since it is larger than the sum of its proper divisors (1477615784).

1646201416 is a wasteful number, since it uses less digits than its factorization.

1646201416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479308 (or 2479304 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1646201416 is about 40573.4077444821. The cubic root of 1646201416 is about 1180.7582543910.

Adding to 1646201416 its reverse (6141026461), we get a palindrome (7787227877).

The spelling of 1646201416 in words is "one billion, six hundred forty-six million, two hundred one thousand, four hundred sixteen".