1642168308 has 48 divisors (see below), whose sum is σ = 4191397056. Its totient is φ = 496277760.

The previous prime is 1642168303. The next prime is 1642168331. The reversal of 1642168308 is 8038612461.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642168303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32560 + ... + 65912.

It is an arithmetic number, because the mean of its divisors is an integer number (87320772).

Almost surely, 2^1642168308 is an apocalyptic number.

It is an amenable number.

1642168308 is an abundant number, since it is smaller than the sum of its proper divisors (2549228748).

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

1642168308 is a wasteful number, since it uses less digits than its factorization.

1642168308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33744 (or 33742 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1642168308 is about 40523.6758944694. The cubic root of 1642168308 is about 1179.7932003775.

The spelling of 1642168308 in words is "one billion, six hundred forty-two million, one hundred sixty-eight thousand, three hundred eight".