2019650868 has 96 divisors (see below), whose sum is σ = 5419008000. Its totient is φ = 649818720.

The previous prime is 2019650851. The next prime is 2019650873. The reversal of 2019650868 is 8680569102.

It is a super-2 number, since 2×2019650868² = 8157979257226306848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2406793 + ... + 2407631.

It is an arithmetic number, because the mean of its divisors is an integer number (56448000).

Almost surely, 2^2019650868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019650868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709504000).

2019650868 is an abundant number, since it is smaller than the sum of its proper divisors (3399357132).

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

2019650868 is a wasteful number, since it uses less digits than its factorization.

2019650868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 2019650868 is about 44940.5258981245. The cubic root of 2019650868 is about 1264.0340322581.

The spelling of 2019650868 in words is "two billion, nineteen million, six hundred fifty thousand, eight hundred sixty-eight".