1642166316 has 72 divisors (see below), whose sum is σ = 4748190720. Its totient is φ = 468779616.

The previous prime is 1642166311. The next prime is 1642166327. The reversal of 1642166316 is 6136612461.

It is a happy number.

1642166316 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 16 + 631 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1642166311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395845 + ... + 399971.

Almost surely, 2^1642166316 is an apocalyptic number.

It is an amenable number.

1642166316 is an abundant number, since it is smaller than the sum of its proper divisors (3106024404).

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

1642166316 is a wasteful number, since it uses less digits than its factorization.

1642166316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5718 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1642166316 is about 40523.6513162375. The cubic root of 1642166316 is about 1179.7927233357.

Adding to 1642166316 its reverse (6136612461), we get a palindrome (7778778777).

The spelling of 1642166316 in words is "one billion, six hundred forty-two million, one hundred sixty-six thousand, three hundred sixteen".