1946408868 has 72 divisors (see below), whose sum is σ = 5217095520. Its totient is φ = 610139520.

The previous prime is 1946408861. The next prime is 1946408869. The reversal of 1946408868 is 8688046491.

It is not an unprimeable number, because it can be changed into a prime (1946408861) 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, 83323 + ... + 104093.

It is an arithmetic number, because the mean of its divisors is an integer number (72459660).

Almost surely, 2^1946408868 is an apocalyptic number.

1946408868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1946408868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2608547760).

1946408868 is an abundant number, since it is smaller than the sum of its proper divisors (3270686652).

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

1946408868 is a wasteful number, since it uses less digits than its factorization.

1946408868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20937 (or 20932 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 1946408868 is about 44118.1240308334. The cubic root of 1946408868 is about 1248.5655797538.

The spelling of 1946408868 in words is "one billion, nine hundred forty-six million, four hundred eight thousand, eight hundred sixty-eight".